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![Relax More. Worry Less. The Automated Spa Monitor.
Stop guessing with messy test kits. The Balboa Purezone™ Hover (Part #96000) floats freely in your spa, automatically monitoring water health so you can focus on relaxing.
[Shop the Purezone Hover at Western Tub and Pool ]
Smart water care made simple
Maintaining your hot tub shouldn't feel like a chemistry experiment. The Balboa Purezone Water Monitoring System with Hover replaces manual testing with advanced optical technology, delivering precision and peace of mind.
Forget messy test kits
Say goodbye to color-matching strips and liquid reagents. Purezone automates the process, checking your water daily or every other day without you lifting a finger.
Precision optical readings
Using advanced optical sensors, Purezone measures key water parameters including pH, free chlorine, total alkalinity, and temperature. This ensures your water is safe, clean, and comfortable for every soak.
Real-time alerts & expert advice
Connected via the Purezone app (iOS and Android), the system sends alerts directly to your phone. It doesn’t just tell you the levels; it provides personalized chemical dosing recommendations tailored to your specific spa size and sanitizer type.
Floats freely with no installation
Unlike wall-mounted monitors that require drilling, the Purezone Hover (96000) simply floats in your water. It’s the perfect "drop-and-go" solution for existing hot tubs.
How it works
1. Connect the App
Download the Purezone app, create your profile, and input your spa details (size and sanitizer type) for customized advice.
2. Float and Monitor
Place the charged Purezone Hover unit into your spa water. It uses a replaceable P3 cassette to perform automated tests.
3. Get Results
Receive instant updates on your phone. If your water needs attention, the app tells you exactly what to add to balance it.
Is my hot tub compatible?
The Balboa Purezone Hover is a floating system designed to work with most residential spas and swim spas up to 2,400 gallons (9,084 Liters).
Because it floats independently and operates on a rechargeable battery, it does not require a specific Balboa control pack to function as a monitor. It is an excellent addition for owners of major spa brands, including:
Cal Spas
Marquis Spas
Master Spas
Artesian Spas
Jacuzzi
Sundance
dynasty spa
maax spa
...and many others.
Note: If you are looking for the wall-mounted version, please check for the "Dock" model (Part #97000). The Hover (Part #96000) is designed specifically for floating use.
Not sure if this is the right part?
Check your current equipment part number or consult our online catalog.
Kit Includes:
1 Purezone (Battery Pack and Cassette Housing)
1 P3 Cassette (FC, pH, and TA) inside foil storage bag
1 Battery Charger
1 Hover
1 Tie
1 Hardware Kit
Specifications
Brand:
Balboa Water Group
Measures:
10" x 9" x 11.5"
Features:
With Hover - Floats freely in spa.
Frequently asked questions
What exactly does the Purezone monitor measure?
The system tests for pH, Free Chlorine, Total Alkalinity, and Temperature. Note: Total Bromine measurement capabilities are coming soon.
How long do the cartridges last?
The replaceable P3 Cassette contains 48 tests. Depending on your testing frequency (daily or every other day), one cassette lasts up to 60 days in the water.
Does this connect to my spa's control pack?
The Hover model functions independently as a water monitor. However, for specific repair parts or integration questions regarding Balboa Spa Paks and lower controls, please contact our support team to ensure you get the exact part for your setup.
I can't find the part I need. Can you help?
Absolutely. We specialize in hard-to-find hot tub repair parts. If you are unsure if this is the correct unit, or need to identify a different part:
Check your part number on the existing unit.
Take clear photos of the part and your spa's lower control pack.
Email us at fixmytub@gmail.com or call 1-855-248-0777.
Upgrade your spa experience today
Save time, save chemicals, and ensure your water is always ready for a soak with the Balboa Purezone Hover.
[Get Purezone Now at Western Tub and Pool ]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4068/5987/balboa_purzone_9700_sytem_at_western_tub_and_pool_e___84809.1770183469.png?c=2 "Relax More. Worry Less. The Automated Spa Monitor.
Stop guessing with messy test kits. The Balboa Purezone™ Hover (Part #96000) floats freely in your spa, automatically monitoring water health so you can focus on relaxing.
[Shop the Purezone Hover at Western Tub and Pool ]
Smart water care made simple
Maintaining your hot tub shouldn't feel like a chemistry experiment. The Balboa Purezone Water Monitoring System with Hover replaces manual testing with advanced optical technology, delivering precision and peace of mind.
Forget messy test kits
Say goodbye to color-matching strips and liquid reagents. Purezone automates the process, checking your water daily or every other day without you lifting a finger.
Precision optical readings
Using advanced optical sensors, Purezone measures key water parameters including pH, free chlorine, total alkalinity, and temperature. This ensures your water is safe, clean, and comfortable for every soak.
Real-time alerts & expert advice
Connected via the Purezone app (iOS and Android), the system sends alerts directly to your phone. It doesn’t just tell you the levels; it provides personalized chemical dosing recommendations tailored to your specific spa size and sanitizer type.
Floats freely with no installation
Unlike wall-mounted monitors that require drilling, the Purezone Hover (96000) simply floats in your water. It’s the perfect \"drop-and-go\" solution for existing hot tubs.
How it works
1. Connect the App
Download the Purezone app, create your profile, and input your spa details (size and sanitizer type) for customized advice.
2. Float and Monitor
Place the charged Purezone Hover unit into your spa water. It uses a replaceable P3 cassette to perform automated tests.
3. Get Results
Receive instant updates on your phone. If your water needs attention, the app tells you exactly what to add to balance it.
Is my hot tub compatible?
The Balboa Purezone Hover is a floating system designed to work with most residential spas and swim spas up to 2,400 gallons (9,084 Liters).
Because it floats independently and operates on a rechargeable battery, it does not require a specific Balboa control pack to function as a monitor. It is an excellent addition for owners of major spa brands, including:
Cal Spas
Marquis Spas
Master Spas
Artesian Spas
Jacuzzi
Sundance
dynasty spa
maax spa
...and many others.
Note: If you are looking for the wall-mounted version, please check for the \"Dock\" model (Part #97000). The Hover (Part #96000) is designed specifically for floating use.
Not sure if this is the right part?
Check your current equipment part number or consult our online catalog.
Kit Includes:
1 Purezone (Battery Pack and Cassette Housing)
1 P3 Cassette (FC, pH, and TA) inside foil storage bag
1 Battery Charger
1 Hover
1 Tie
1 Hardware Kit
Specifications
Brand:
Balboa Water Group
Measures:
10\" x 9\" x 11.5\"
Features:
With Hover - Floats freely in spa.
Frequently asked questions
What exactly does the Purezone monitor measure?
The system tests for pH, Free Chlorine, Total Alkalinity, and Temperature. Note: Total Bromine measurement capabilities are coming soon.
How long do the cartridges last?
The replaceable P3 Cassette contains 48 tests. Depending on your testing frequency (daily or every other day), one cassette lasts up to 60 days in the water.
Does this connect to my spa's control pack?
The Hover model functions independently as a water monitor. However, for specific repair parts or integration questions regarding Balboa Spa Paks and lower controls, please contact our support team to ensure you get the exact part for your setup.
I can't find the part I need. Can you help?
Absolutely. We specialize in hard-to-find hot tub repair parts. If you are unsure if this is the correct unit, or need to identify a different part:
Check your part number on the existing unit.
Take clear photos of the part and your spa's lower control pack.
Email us at fixmytub@gmail.com or call 1-855-248-0777.
Upgrade your spa experience today
Save time, save chemicals, and ensure your water is always ready for a soak with the Balboa Purezone Hover.
[Get Purezone Now at Western Tub and Pool ]")
Balboa Purezone Water Care Monitoring System
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Replace and Recycle with the Gecko Flow Sensor
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[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]
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Get the performance of a new Gecko Flow Sensor at a fraction of the cost. Our recycled flow sensors are inspected and ready to work like new.
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2. Easy Purchase
Visit our store to secure your recycled Gecko Flow Sensor or explore options for purchasing a new one using our handy link.
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Frequently Asked Questions
What is the condition of these recycled sensors?
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What heaters do these sensors fit?
They are specifically compatible with Gecko’s In.Xe and In.YE heater assemblies.
What if the sensor I need isn’t in stock?
Don't worry! Stock rotates often, so you can check back or add the item to your Wishlist for updates.
Can I purchase a new flow sensor instead?
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New purchase link
New In.xe , In.ye inflo flow sensor purchase link
Extend the Life of Your Heater Today
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[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]
Why Choose Our Recycled Gecko Flow Sensors?
Affordable and Reliable
Get the performance of a new Gecko Flow Sensor at a fraction of the cost. Our recycled flow sensors are inspected and ready to work like new.
Eco-Friendly Solution
Support sustainability by choosing recycled parts. Give quality components another life while reducing waste.
Perfect Fit for Your Heater
These flow sensors are specifically designed to work with Gecko’s In.Xe and In.YE heater assemblies. No guesswork, just a hassle-free fit.
How It Works
1. Check Availability
We carry stock on a rotating basis, so keep an eye on availability or add the Gecko Flow Sensor to your Wishlist.
2. Easy Purchase
Visit our store to secure your recycled Gecko Flow Sensor or explore options for purchasing a new one using our handy link.
3. Install & Enjoy Warm Comfort
Once your sensor arrives, easily install it in your heater assembly and enjoy smooth, efficient operation.
Frequently Asked Questions
What is the condition of these recycled sensors?
All sensors undergo quality checks to ensure they meet performance standards.
What heaters do these sensors fit?
They are specifically compatible with Gecko’s In.Xe and In.YE heater assemblies.
What if the sensor I need isn’t in stock?
Don't worry! Stock rotates often, so you can check back or add the item to your Wishlist for updates.
Can I purchase a new flow sensor instead?
Yes! We also provide a link to purchase a brand-new Gecko Flow Sensor if recycling isn’t the right fit for you.
New purchase link
New In.xe , In.ye inflo flow sensor purchase link
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![Recycled Gecko Flow Sensor for In.Xe and In.YE heater assemblies
Replace and Recycle with the Gecko Flow Sensor
Looking for an affordable and sustainable solution for your Gecko In.Xe or In.YE heater? Our recycled Gecko Flow Sensors (Part No. E182156, SN 210067896) are here to help you keep things flowing effortlessly. Save money while giving quality parts a second life.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]
Why Choose Our Recycled Gecko Flow Sensors?
Affordable and Reliable
Get the performance of a new Gecko Flow Sensor at a fraction of the cost. Our recycled flow sensors are inspected and ready to work like new.
Eco-Friendly Solution
Support sustainability by choosing recycled parts. Give quality components another life while reducing waste.
Perfect Fit for Your Heater
These flow sensors are specifically designed to work with Gecko’s In.Xe and In.YE heater assemblies. No guesswork, just a hassle-free fit.
How It Works
1. Check Availability
We carry stock on a rotating basis, so keep an eye on availability or add the Gecko Flow Sensor to your Wishlist.
2. Easy Purchase
Visit our store to secure your recycled Gecko Flow Sensor or explore options for purchasing a new one using our handy link.
3. Install & Enjoy Warm Comfort
Once your sensor arrives, easily install it in your heater assembly and enjoy smooth, efficient operation.
Frequently Asked Questions
What is the condition of these recycled sensors?
All sensors undergo quality checks to ensure they meet performance standards.
What heaters do these sensors fit?
They are specifically compatible with Gecko’s In.Xe and In.YE heater assemblies.
What if the sensor I need isn’t in stock?
Don't worry! Stock rotates often, so you can check back or add the item to your Wishlist for updates.
Can I purchase a new flow sensor instead?
Yes! We also provide a link to purchase a brand-new Gecko Flow Sensor if recycling isn’t the right fit for you.
New purchase link
New In.xe , In.ye inflo flow sensor purchase link
Extend the Life of Your Heater Today
Don’t compromise on performance or sustainability. Shop our reliable, recycled sensors today and keep your pool or tub functioning like a dream.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/3245/4384/20240614_163754__51158.1752168408.jpg?c=2 "Recycled Gecko Flow Sensor for In.Xe and In.YE heater assemblies
Replace and Recycle with the Gecko Flow Sensor
Looking for an affordable and sustainable solution for your Gecko In.Xe or In.YE heater? Our recycled Gecko Flow Sensors (Part No. E182156, SN 210067896) are here to help you keep things flowing effortlessly. Save money while giving quality parts a second life.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]
Why Choose Our Recycled Gecko Flow Sensors?
Affordable and Reliable
Get the performance of a new Gecko Flow Sensor at a fraction of the cost. Our recycled flow sensors are inspected and ready to work like new.
Eco-Friendly Solution
Support sustainability by choosing recycled parts. Give quality components another life while reducing waste.
Perfect Fit for Your Heater
These flow sensors are specifically designed to work with Gecko’s In.Xe and In.YE heater assemblies. No guesswork, just a hassle-free fit.
How It Works
1. Check Availability
We carry stock on a rotating basis, so keep an eye on availability or add the Gecko Flow Sensor to your Wishlist.
2. Easy Purchase
Visit our store to secure your recycled Gecko Flow Sensor or explore options for purchasing a new one using our handy link.
3. Install & Enjoy Warm Comfort
Once your sensor arrives, easily install it in your heater assembly and enjoy smooth, efficient operation.
Frequently Asked Questions
What is the condition of these recycled sensors?
All sensors undergo quality checks to ensure they meet performance standards.
What heaters do these sensors fit?
They are specifically compatible with Gecko’s In.Xe and In.YE heater assemblies.
What if the sensor I need isn’t in stock?
Don't worry! Stock rotates often, so you can check back or add the item to your Wishlist for updates.
Can I purchase a new flow sensor instead?
Yes! We also provide a link to purchase a brand-new Gecko Flow Sensor if recycling isn’t the right fit for you.
New purchase link
New In.xe , In.ye inflo flow sensor purchase link
Extend the Life of Your Heater Today
Don’t compromise on performance or sustainability. Shop our reliable, recycled sensors today and keep your pool or tub functioning like a dream.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]")
![Recycled Gecko Flow Sensor for In.Xe and In.YE heater assemblies
Replace and Recycle with the Gecko Flow Sensor
Looking for an affordable and sustainable solution for your Gecko In.Xe or In.YE heater? Our recycled Gecko Flow Sensors (Part No. E182156, SN 210067896) are here to help you keep things flowing effortlessly. Save money while giving quality parts a second life.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]
Why Choose Our Recycled Gecko Flow Sensors?
Affordable and Reliable
Get the performance of a new Gecko Flow Sensor at a fraction of the cost. Our recycled flow sensors are inspected and ready to work like new.
Eco-Friendly Solution
Support sustainability by choosing recycled parts. Give quality components another life while reducing waste.
Perfect Fit for Your Heater
These flow sensors are specifically designed to work with Gecko’s In.Xe and In.YE heater assemblies. No guesswork, just a hassle-free fit.
How It Works
1. Check Availability
We carry stock on a rotating basis, so keep an eye on availability or add the Gecko Flow Sensor to your Wishlist.
2. Easy Purchase
Visit our store to secure your recycled Gecko Flow Sensor or explore options for purchasing a new one using our handy link.
3. Install & Enjoy Warm Comfort
Once your sensor arrives, easily install it in your heater assembly and enjoy smooth, efficient operation.
Frequently Asked Questions
What is the condition of these recycled sensors?
All sensors undergo quality checks to ensure they meet performance standards.
What heaters do these sensors fit?
They are specifically compatible with Gecko’s In.Xe and In.YE heater assemblies.
What if the sensor I need isn’t in stock?
Don't worry! Stock rotates often, so you can check back or add the item to your Wishlist for updates.
Can I purchase a new flow sensor instead?
Yes! We also provide a link to purchase a brand-new Gecko Flow Sensor if recycling isn’t the right fit for you.
New purchase link
New In.xe , In.ye inflo flow sensor purchase link
Extend the Life of Your Heater Today
Don’t compromise on performance or sustainability. Shop our reliable, recycled sensors today and keep your pool or tub functioning like a dream.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/3245/4385/20240614_163722__84787.1752168415.jpg?c=2 "Recycled Gecko Flow Sensor for In.Xe and In.YE heater assemblies
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[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]
Why Choose Our Recycled Gecko Flow Sensors?
Affordable and Reliable
Get the performance of a new Gecko Flow Sensor at a fraction of the cost. Our recycled flow sensors are inspected and ready to work like new.
Eco-Friendly Solution
Support sustainability by choosing recycled parts. Give quality components another life while reducing waste.
Perfect Fit for Your Heater
These flow sensors are specifically designed to work with Gecko’s In.Xe and In.YE heater assemblies. No guesswork, just a hassle-free fit.
How It Works
1. Check Availability
We carry stock on a rotating basis, so keep an eye on availability or add the Gecko Flow Sensor to your Wishlist.
2. Easy Purchase
Visit our store to secure your recycled Gecko Flow Sensor or explore options for purchasing a new one using our handy link.
3. Install & Enjoy Warm Comfort
Once your sensor arrives, easily install it in your heater assembly and enjoy smooth, efficient operation.
Frequently Asked Questions
What is the condition of these recycled sensors?
All sensors undergo quality checks to ensure they meet performance standards.
What heaters do these sensors fit?
They are specifically compatible with Gecko’s In.Xe and In.YE heater assemblies.
What if the sensor I need isn’t in stock?
Don't worry! Stock rotates often, so you can check back or add the item to your Wishlist for updates.
Can I purchase a new flow sensor instead?
Yes! We also provide a link to purchase a brand-new Gecko Flow Sensor if recycling isn’t the right fit for you.
New purchase link
New In.xe , In.ye inflo flow sensor purchase link
Extend the Life of Your Heater Today
Don’t compromise on performance or sustainability. Shop our reliable, recycled sensors today and keep your pool or tub functioning like a dream.
[Shop Now or Add to Wishlist at Western Tub and Pool 1-855-248-0777]")
![Balboa VS520SZ Circuit Board 33-55299-K — New OEM Replacement Part
Get your hot tub running again with a genuine Balboa VS520SZ circuit board. This hard-to-find replacement PCB is in stock at Western Tub and Pool — your trusted source for spa repair parts across North America.
[Shop and Order at Western Tub and Pool — Call 1-855-248-0777]
What Is the Balboa VS520SZ Circuit Board (33-55299-K)?
The Balboa VS520SZ Circuit Board, Part Number 33-55299-K (also known as VS520SZ-3W SER REV01), is a new, genuine printed circuit board (PCB) manufactured by Balboa Water Group. It serves as the main control board for VS520SZ-series hot tub and spa control systems, managing everything from jet pumps and heaters to lighting, ozone, and audio systems.
This board is a direct replacement for aging or failed circuit boards in a wide range of Cal Spas, Coleman, Clearwater, and other hot tubs originally built with the VS520SZ control system.
Product Specifications
Specification
Detail
Part Number
33-55299-K
Also Known As
VS520SZ-3W SER REV01, 55299-01
Brand
Balboa Water Group (BWG)
System Model
VSP-VS520SZ-DCAH / VSP-BDV520SZ-DCAH
Board Type
Printed Circuit Board (PCB) — Serial Standard
Power Requirements
240VAC, 60Hz, 40A, Class A GFCI-protected
Wiring
3-Wire, 240 Volt Operation
Circuit Breaker Rating
50A maximum
Software Version
Version 39
Heater Output
240V, 5.5kW
Condition
Brand New
Associated/Cross-Reference Part Numbers:
33-55151-K · 33-0033B-K · 55151 · 55151-01 · 55299-01 · G1157 · 389276 · 59-138-1687 · 9710-116
Compatible Chip Numbers:
VS520SZR1A · VS520SZR1B · VS520SZR1C · INFI10R1A
Compatible Topside Panels:
53189-01 · 53811 · 55252-01 · 51574-01 · VL501S · VL600 · VL701 · VL701S · VL702S
System Outputs & Controls
This circuit board supports the following hot tub components:
240V Pump 1 — 2-Speed (up to 13 Amps)
240V Pump 2 — 2-Speed (up to 13 Amps)
240V Blower — 1-Speed (up to 8 Amps)
120V Circulation Pump — 24-hour operation with 3°F shutoff
120V Ozonator — Connects to terminal J29
12V Spa Light — Connects to light terminal J20
120V AV/Stereo System — Connects to terminal J50
240V 5.5kW Heater — Primary heating element
IR Receiver Module — Connects to terminal J1 or J2
Optional Expander Accessories Supported:
X-O3 (1-speed pump output)
X-P (blower output)
X-2SP Kit (2-speed pump 2 — adapter PN 25339 required)
X-P231 (high-amperage branch circuit protection)
X-P332 (additional 2-speed pump output — PN 55137)
Hot Tub and Spa Models That Use This Board
The Balboa VS520SZ circuit board is used in the following hot tub brands and control systems:
Cal Spas
All Cal Spas hot tubs originally equipped with a Balboa VS520SZ control system
Verify your model by checking the control system ID label on top of your spa pack
Coleman Spas
CO866L
CO866B
CO866DL
CO756L
CO756B
(Compatible chip numbers: COLE2PDVR1A / COLE2PDVR1B)
Clearwater Spas
All Clearwater Spas originally built with VS520SZ-series Balboa control systems
Compatible Balboa VS520SZ Control Systems
System Part Number
Model
54661-01 (VS520SZ)
VSP-BDV520SZ-DCAH
54661-HC (VS520SZ)
VSP-BDV520SZ-DCAH
56007 (VS520SZ)
VSP-VS520SZ-DCAH
56007-01 (VS520SZ)
VSP-VS520SZ-DCAH
56007-HC (VS520SZ)
VSP-VS520SZ-DCAH
56007HC1 (VS520SZ)
VSP-VS520SZ-DCAH
Not sure if this is the right board for your spa? Always verify compatibility by matching the Model Number on your control system's ID label before ordering. Incompatible boards can look nearly identical. When in doubt, call us — we're here to help.
Not Sure If This Is the Right Part? We Can Help.
The VS520SZ circuit board is a hard-to-find part, and getting the wrong one is a costly mistake. Before ordering, we strongly recommend confirming your part number.
Here's how to get the right answer fast:
Check your part number — Look for the model ID label on top of your spa's control box
Send us a photo — Email a clear picture of your existing board to fixmytub@gmail.com
Share your spa details — Include your hot tub's make, model, and serial number in your email
Call us directly — Our team is ready to help at 1-855-248-0777
We'll confirm compatibility and get you sorted quickly.
Frequently Asked Questions
What does the Balboa VS520SZ circuit board do?
The VS520SZ PCB is the brain of your hot tub's control system. It manages all major electrical components — jet pumps, heaters, lights, blowers, ozone systems, and more. When this board fails, your spa may stop heating, lose pump function, or shut down entirely.
Is this a genuine Balboa circuit board?
Yes. The 33-55299-K sold by Western Tub and Pool is a brand new, genuine Balboa Water Group circuit board, not an aftermarket imitation.
How do I know if my circuit board has failed?
Common symptoms of a failed Balboa VS520SZ circuit board include:
Spa will not power on or keeps tripping the breaker
Error codes on your topside display (e.g., FLO, OH, DR, HOT)
Pumps or heater not responding to controls
Intermittent or complete loss of control panel function
Burnt smell or visible damage on the board
Can I install this circuit board myself?
Circuit board replacement requires knowledge of spa electrical systems. Improper installation or incorrect PCB selection voids the manufacturer's warranty and may damage other components. If you are not experienced with spa electrical work, we recommend hiring a qualified spa technician.
Does the board come pre-configured?
Configuration requirements (DIP switch settings, jumper positions, and voltage settings) vary by installation. Contact us before ordering and we can advise on pre-configuration options. Our team at Western Tub and Pool is happy to walk you through what you need.
What is the warranty on this circuit board?
This board comes with a manufacturer's limited warranty. Contact us at 1-855-248-0777 or fixmytub@gmail.com for full warranty terms and conditions.
Do you ship across Canada and the United States?
Yes. Western Tub and Pool ships spa parts across North America. Contact us for shipping options and delivery timelines to your location.
What if I can't find my part number?
No problem. Send us an email at fixmytub@gmail.com with photos of your existing board and your hot tub's make, model, and serial number. We'll identify the right part for you.
Shop and Order at Western Tub and Pool
Don't let a faulty circuit board keep you out of your hot tub any longer. Western Tub and Pool stocks genuine Balboa replacement parts — including hard-to-find boards like the VS520SZ 33-55299-K — so you can get back to soaking sooner.
Call us: 1-855-248-0777
Email us: fixmytub@gmail.com
Browse our full online catalogue for more Balboa circuit boards, spa packs, pumps, heaters, and accessories — or reach out directly and let our team find exactly what you need.
[Shop Now at Western Tub and Pool] [Email Us at fixmytub@gmail.com] [Call 1-855-248-0777]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4429/6684/33-55299-k__31345.1783200372.PNG?c=2 "Balboa VS520SZ Circuit Board 33-55299-K — New OEM Replacement Part
Get your hot tub running again with a genuine Balboa VS520SZ circuit board. This hard-to-find replacement PCB is in stock at Western Tub and Pool — your trusted source for spa repair parts across North America.
[Shop and Order at Western Tub and Pool — Call 1-855-248-0777]
What Is the Balboa VS520SZ Circuit Board (33-55299-K)?
The Balboa VS520SZ Circuit Board, Part Number 33-55299-K (also known as VS520SZ-3W SER REV01), is a new, genuine printed circuit board (PCB) manufactured by Balboa Water Group. It serves as the main control board for VS520SZ-series hot tub and spa control systems, managing everything from jet pumps and heaters to lighting, ozone, and audio systems.
This board is a direct replacement for aging or failed circuit boards in a wide range of Cal Spas, Coleman, Clearwater, and other hot tubs originally built with the VS520SZ control system.
Product Specifications
Specification
Detail
Part Number
33-55299-K
Also Known As
VS520SZ-3W SER REV01, 55299-01
Brand
Balboa Water Group (BWG)
System Model
VSP-VS520SZ-DCAH / VSP-BDV520SZ-DCAH
Board Type
Printed Circuit Board (PCB) — Serial Standard
Power Requirements
240VAC, 60Hz, 40A, Class A GFCI-protected
Wiring
3-Wire, 240 Volt Operation
Circuit Breaker Rating
50A maximum
Software Version
Version 39
Heater Output
240V, 5.5kW
Condition
Brand New
Associated/Cross-Reference Part Numbers:
33-55151-K · 33-0033B-K · 55151 · 55151-01 · 55299-01 · G1157 · 389276 · 59-138-1687 · 9710-116
Compatible Chip Numbers:
VS520SZR1A · VS520SZR1B · VS520SZR1C · INFI10R1A
Compatible Topside Panels:
53189-01 · 53811 · 55252-01 · 51574-01 · VL501S · VL600 · VL701 · VL701S · VL702S
System Outputs & Controls
This circuit board supports the following hot tub components:
240V Pump 1 — 2-Speed (up to 13 Amps)
240V Pump 2 — 2-Speed (up to 13 Amps)
240V Blower — 1-Speed (up to 8 Amps)
120V Circulation Pump — 24-hour operation with 3°F shutoff
120V Ozonator — Connects to terminal J29
12V Spa Light — Connects to light terminal J20
120V AV/Stereo System — Connects to terminal J50
240V 5.5kW Heater — Primary heating element
IR Receiver Module — Connects to terminal J1 or J2
Optional Expander Accessories Supported:
X-O3 (1-speed pump output)
X-P (blower output)
X-2SP Kit (2-speed pump 2 — adapter PN 25339 required)
X-P231 (high-amperage branch circuit protection)
X-P332 (additional 2-speed pump output — PN 55137)
Hot Tub and Spa Models That Use This Board
The Balboa VS520SZ circuit board is used in the following hot tub brands and control systems:
Cal Spas
All Cal Spas hot tubs originally equipped with a Balboa VS520SZ control system
Verify your model by checking the control system ID label on top of your spa pack
Coleman Spas
CO866L
CO866B
CO866DL
CO756L
CO756B
(Compatible chip numbers: COLE2PDVR1A / COLE2PDVR1B)
Clearwater Spas
All Clearwater Spas originally built with VS520SZ-series Balboa control systems
Compatible Balboa VS520SZ Control Systems
System Part Number
Model
54661-01 (VS520SZ)
VSP-BDV520SZ-DCAH
54661-HC (VS520SZ)
VSP-BDV520SZ-DCAH
56007 (VS520SZ)
VSP-VS520SZ-DCAH
56007-01 (VS520SZ)
VSP-VS520SZ-DCAH
56007-HC (VS520SZ)
VSP-VS520SZ-DCAH
56007HC1 (VS520SZ)
VSP-VS520SZ-DCAH
Not sure if this is the right board for your spa? Always verify compatibility by matching the Model Number on your control system's ID label before ordering. Incompatible boards can look nearly identical. When in doubt, call us — we're here to help.
Not Sure If This Is the Right Part? We Can Help.
The VS520SZ circuit board is a hard-to-find part, and getting the wrong one is a costly mistake. Before ordering, we strongly recommend confirming your part number.
Here's how to get the right answer fast:
Check your part number — Look for the model ID label on top of your spa's control box
Send us a photo — Email a clear picture of your existing board to fixmytub@gmail.com
Share your spa details — Include your hot tub's make, model, and serial number in your email
Call us directly — Our team is ready to help at 1-855-248-0777
We'll confirm compatibility and get you sorted quickly.
Frequently Asked Questions
What does the Balboa VS520SZ circuit board do?
The VS520SZ PCB is the brain of your hot tub's control system. It manages all major electrical components — jet pumps, heaters, lights, blowers, ozone systems, and more. When this board fails, your spa may stop heating, lose pump function, or shut down entirely.
Is this a genuine Balboa circuit board?
Yes. The 33-55299-K sold by Western Tub and Pool is a brand new, genuine Balboa Water Group circuit board, not an aftermarket imitation.
How do I know if my circuit board has failed?
Common symptoms of a failed Balboa VS520SZ circuit board include:
Spa will not power on or keeps tripping the breaker
Error codes on your topside display (e.g., FLO, OH, DR, HOT)
Pumps or heater not responding to controls
Intermittent or complete loss of control panel function
Burnt smell or visible damage on the board
Can I install this circuit board myself?
Circuit board replacement requires knowledge of spa electrical systems. Improper installation or incorrect PCB selection voids the manufacturer's warranty and may damage other components. If you are not experienced with spa electrical work, we recommend hiring a qualified spa technician.
Does the board come pre-configured?
Configuration requirements (DIP switch settings, jumper positions, and voltage settings) vary by installation. Contact us before ordering and we can advise on pre-configuration options. Our team at Western Tub and Pool is happy to walk you through what you need.
What is the warranty on this circuit board?
This board comes with a manufacturer's limited warranty. Contact us at 1-855-248-0777 or fixmytub@gmail.com for full warranty terms and conditions.
Do you ship across Canada and the United States?
Yes. Western Tub and Pool ships spa parts across North America. Contact us for shipping options and delivery timelines to your location.
What if I can't find my part number?
No problem. Send us an email at fixmytub@gmail.com with photos of your existing board and your hot tub's make, model, and serial number. We'll identify the right part for you.
Shop and Order at Western Tub and Pool
Don't let a faulty circuit board keep you out of your hot tub any longer. Western Tub and Pool stocks genuine Balboa replacement parts — including hard-to-find boards like the VS520SZ 33-55299-K — so you can get back to soaking sooner.
Call us: 1-855-248-0777
Email us: fixmytub@gmail.com
Browse our full online catalogue for more Balboa circuit boards, spa packs, pumps, heaters, and accessories — or reach out directly and let our team find exactly what you need.
[Shop Now at Western Tub and Pool] [Email Us at fixmytub@gmail.com] [Call 1-855-248-0777]")
![Balboa VS520SZ Circuit Board 33-55151-K — Genuine Replacement Part
Get your hot tub back up and running with the genuine Balboa VS520SZ Circuit Board (part number 33-55151-K). Available new and in stock at Western Tub and Pool — your trusted source for hard-to-find spa repair parts.
[Shop and Order at Western Tub and Pool — Call 1-855-248-0777]
What Is the Balboa VS520SZ Circuit Board?
The Balboa VS520SZ Circuit Board (part number 33-55151-K) is a factory-new printed circuit board (PCB) designed to replace faulty or failed control boards in VS520SZ-based hot tub systems. Built by Balboa Water Group — one of the most trusted names in spa technology — this board restores full functionality to your spa control system quickly and reliably.
Whether your spa won't heat, won't power on, or is displaying error codes, a failed circuit board is often the culprit. The VS520SZ is a proven, industry-standard replacement that fits a wide range of hot tub brands and control packs.
Key Features and Specifications
Brand: Balboa Water Group
Model: VS520SZ
Primary Part Number: 33-55151-K
Condition: New (factory fresh — never installed)
Connection Type: Serial Standard, 8-Pin Phone Cable
Pump Support: Supports up to 3 pumps, or 2 pumps and a blower
Compatible Sensors: Balboa M7 Sensors
Warranty: Manufacturer's limited 1-year warranty
System Outputs (as configured):
240V Pump 1 (2-Speed)
240V Pump 2 (2-Speed)
240V Blower
120V Circulation Pump
120V Ozonator
12V Spa Light
120V AV / Stereo
240V 5.5kW Heater
Power Requirements:
240VAC, 60Hz, 40A
Class A GFCI-protected service required
Circuit breaker rating: 50A max
4-wire connection (hot, hot, neutral, ground)
Cross-Reference Part Numbers
This board is sold and referenced under several part numbers. If you've seen any of the following on your existing board or in your spa documentation, the 33-55151-K is your replacement:
55151-01
33-0033B-K
33-0033B
330033B
9710-116
59-138-1687
G1157
389276
VS520SZR
33-55151 (HydroQuip)
Associated Chip Numbers: VS520SZR1A, VS520SZR1B, INFI10R1A
Compatible Keypads: 53189, VL501S
Compatible Hot Tub Brands and Control Systems
The Balboa VS520SZ circuit board has been used across a wide range of hot tub brands and control packs, including:
Compatible Control Packs:
VS520SZ Series Control Packs
HydroQuip 6230B Series Control Packs
HydroQuip 4330B Series
HydroQuip 6330B Series
Hot Tub Brands Known to Use This Board:
Cal Spas
Coleman Hot Tubs
Clearwater Spas
Any spa originally manufactured with a Balboa VS520SZ control system
Not sure if this board fits your spa? Check the model ID label on top of your existing control system enclosure. The model number printed there is your most reliable confirmation. If you're still unsure, we're here to help — see the contact section below.
Frequently Asked Questions
How do I know if this circuit board is compatible with my hot tub?
The best way to confirm compatibility is to locate the model ID label on the top of your spa's control system enclosure. If it reads "VS520SZ," this is the correct replacement board. You can also cross-reference using any of the part numbers listed above. Still not sure? Call us at 1-855-248-0777 or email fixmytub@gmail.com — our team is happy to help you identify the right part.
Is this a new or refurbished circuit board?
This is a brand-new, factory-fresh circuit board. It has never been installed or used. Every board sold at Western Tub and Pool is genuine and backed by the manufacturer's limited 1-year warranty.
Can I install this board myself?
Circuit board replacement requires a working knowledge of spa electrical systems and proper tools. If you're not comfortable working with electrical components, we strongly recommend hiring a qualified spa technician to handle the installation. Incorrect installation or selection of an incompatible board voids the manufacturer's warranty.
What if I don't know my part number?
No problem. Send us an email at fixmytub@gmail.com with photos of your existing circuit board, along with your hot tub's make, model, and serial number. Our team will identify the correct board for you and confirm availability before you order.
Does this board support a circulation pump and ozonator?
Yes. The VS520SZ supports a 120V circulation pump and 120V ozonator, in addition to primary and secondary pumps, a blower, spa lighting, and a stereo system.
Are circuit boards returnable?
Circuit boards are generally non-returnable once purchased, as they cannot be resold as new once opened. This is why we strongly recommend confirming compatibility before ordering. Our team is always available to assist you in making the right selection.
Can't Find the Part You Need?
We specialize in hard-to-find hot tub and spa parts. If you've been searching for a specific circuit board or spa component without luck, Western Tub and Pool is here to help.
Email us: fixmytub@gmail.com — Send us your part number, or include photos of your existing board along with your spa's make, model, and serial number, and we'll track down the right part for you.
Call us: 1-855-248-0777 — Speak directly with a knowledgeable team member who can guide you through the identification and ordering process.
Shop and Order at Western Tub and Pool
Don't let a failed circuit board keep you out of your hot tub. The Balboa VS520SZ Circuit Board 33-55151-K is available now — new, genuine, and ready to ship.
[Call 1-855-248-0777 to Order] | [Email fixmytub@gmail.com for Assistance]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4428/6683/33-55151-k__09574.1783199918.PNG?c=2 "Balboa VS520SZ Circuit Board 33-55151-K — Genuine Replacement Part
Get your hot tub back up and running with the genuine Balboa VS520SZ Circuit Board (part number 33-55151-K). Available new and in stock at Western Tub and Pool — your trusted source for hard-to-find spa repair parts.
[Shop and Order at Western Tub and Pool — Call 1-855-248-0777]
What Is the Balboa VS520SZ Circuit Board?
The Balboa VS520SZ Circuit Board (part number 33-55151-K) is a factory-new printed circuit board (PCB) designed to replace faulty or failed control boards in VS520SZ-based hot tub systems. Built by Balboa Water Group — one of the most trusted names in spa technology — this board restores full functionality to your spa control system quickly and reliably.
Whether your spa won't heat, won't power on, or is displaying error codes, a failed circuit board is often the culprit. The VS520SZ is a proven, industry-standard replacement that fits a wide range of hot tub brands and control packs.
Key Features and Specifications
Brand: Balboa Water Group
Model: VS520SZ
Primary Part Number: 33-55151-K
Condition: New (factory fresh — never installed)
Connection Type: Serial Standard, 8-Pin Phone Cable
Pump Support: Supports up to 3 pumps, or 2 pumps and a blower
Compatible Sensors: Balboa M7 Sensors
Warranty: Manufacturer's limited 1-year warranty
System Outputs (as configured):
240V Pump 1 (2-Speed)
240V Pump 2 (2-Speed)
240V Blower
120V Circulation Pump
120V Ozonator
12V Spa Light
120V AV / Stereo
240V 5.5kW Heater
Power Requirements:
240VAC, 60Hz, 40A
Class A GFCI-protected service required
Circuit breaker rating: 50A max
4-wire connection (hot, hot, neutral, ground)
Cross-Reference Part Numbers
This board is sold and referenced under several part numbers. If you've seen any of the following on your existing board or in your spa documentation, the 33-55151-K is your replacement:
55151-01
33-0033B-K
33-0033B
330033B
9710-116
59-138-1687
G1157
389276
VS520SZR
33-55151 (HydroQuip)
Associated Chip Numbers: VS520SZR1A, VS520SZR1B, INFI10R1A
Compatible Keypads: 53189, VL501S
Compatible Hot Tub Brands and Control Systems
The Balboa VS520SZ circuit board has been used across a wide range of hot tub brands and control packs, including:
Compatible Control Packs:
VS520SZ Series Control Packs
HydroQuip 6230B Series Control Packs
HydroQuip 4330B Series
HydroQuip 6330B Series
Hot Tub Brands Known to Use This Board:
Cal Spas
Coleman Hot Tubs
Clearwater Spas
Any spa originally manufactured with a Balboa VS520SZ control system
Not sure if this board fits your spa? Check the model ID label on top of your existing control system enclosure. The model number printed there is your most reliable confirmation. If you're still unsure, we're here to help — see the contact section below.
Frequently Asked Questions
How do I know if this circuit board is compatible with my hot tub?
The best way to confirm compatibility is to locate the model ID label on the top of your spa's control system enclosure. If it reads \"VS520SZ,\" this is the correct replacement board. You can also cross-reference using any of the part numbers listed above. Still not sure? Call us at 1-855-248-0777 or email fixmytub@gmail.com — our team is happy to help you identify the right part.
Is this a new or refurbished circuit board?
This is a brand-new, factory-fresh circuit board. It has never been installed or used. Every board sold at Western Tub and Pool is genuine and backed by the manufacturer's limited 1-year warranty.
Can I install this board myself?
Circuit board replacement requires a working knowledge of spa electrical systems and proper tools. If you're not comfortable working with electrical components, we strongly recommend hiring a qualified spa technician to handle the installation. Incorrect installation or selection of an incompatible board voids the manufacturer's warranty.
What if I don't know my part number?
No problem. Send us an email at fixmytub@gmail.com with photos of your existing circuit board, along with your hot tub's make, model, and serial number. Our team will identify the correct board for you and confirm availability before you order.
Does this board support a circulation pump and ozonator?
Yes. The VS520SZ supports a 120V circulation pump and 120V ozonator, in addition to primary and secondary pumps, a blower, spa lighting, and a stereo system.
Are circuit boards returnable?
Circuit boards are generally non-returnable once purchased, as they cannot be resold as new once opened. This is why we strongly recommend confirming compatibility before ordering. Our team is always available to assist you in making the right selection.
Can't Find the Part You Need?
We specialize in hard-to-find hot tub and spa parts. If you've been searching for a specific circuit board or spa component without luck, Western Tub and Pool is here to help.
Email us: fixmytub@gmail.com — Send us your part number, or include photos of your existing board along with your spa's make, model, and serial number, and we'll track down the right part for you.
Call us: 1-855-248-0777 — Speak directly with a knowledgeable team member who can guide you through the identification and ordering process.
Shop and Order at Western Tub and Pool
Don't let a failed circuit board keep you out of your hot tub. The Balboa VS520SZ Circuit Board 33-55151-K is available now — new, genuine, and ready to ship.
[Call 1-855-248-0777 to Order] | [Email fixmytub@gmail.com for Assistance]")
![Balboa VS520DZ Circuit Board 33-55152-K — Get Yours Before They're Gone
Is your hot tub acting up? If your spa runs a Balboa VS520DZ control system, this circuit board is the part you need. The Balboa VS520DZ Circuit Board (Part No. 33-55152-K) is a genuine, new replacement PCB built for VS520DZ control boxes — and because it has been discontinued by the manufacturer, stock is extremely limited. Shop and order at Western Tub and Pool before it sells out.
[Call Us Now: 1-855-248-0777] [Email: fixmytub@gmail.com]
Why This Circuit Board Matters
When your spa's circuit board fails, everything stops — heating, jets, controls. Replacing it with the exact correct board gets your hot tub back up and running fast. The Balboa VS520DZ Circuit Board is the brain of the VS520DZ control system, and getting the right one matters more than most people realize.
This is a hard-to-find, discontinued part. Western Tub and Pool has new units in stock. Once they're gone, they're gone. Don't wait.
Product Specifications
Specification
Detail
Brand
Balboa Water Group
Part Number
33-55152-K
Alternate Part Number
55152 / 55152-01
Item Type
PCB (Printed Circuit Board) — Serial Deluxe
Chip Number
VS520DZR1B
Connection Type
8-Pin Phone Style Cable
System Voltage
115/230V
Heater Version
Flow-Thru
Heater Wattage
5.5kW
Supported Components
Pump 1 + Pump 2 + Blower
Technology
Balboa Patented M7® Temperature & Water Flow Sensing
Weight
1.00 lb
Warranty
1 Year from Manufacturer
Condition
New
Availability
Limited Stock — Discontinued by Manufacturer
What Is the VS520DZ Circuit Board Used In?
The Balboa VS520DZ Circuit Board (chip number VS520DZR1B) is designed specifically for VS520DZ control boxes and control packs. It is part of Balboa's Value Series (VS) family, which was used across a wide range of hot tub and spa brands.
Compatible spa control systems and brands that commonly used VS520DZ Balboa control packs include:
Great Lakes Spas — GVS500, GVS500SZ, GVS501, GVS510, GVS511, and GVS511SZ series
Leisure Bay Spas — VS120R and VS240R series
Master Spas — VS 501 and VS 510 Pack series
Hydro Spa — HS200VS series
Cal Spa — Models using VS300FC control packs
Keys Backyard Spas — Various models using VS series Balboa control systems
Nordic Spas — Models using NORVS300 control systems
Many private-label spa brands that used Balboa VS520DZ factory control packs
Important: Do not order a circuit board based on looks alone. Several Balboa boards appear identical but contain different chips and software. Always verify using the chip number found on a small white sticker near the center of your board. The chip number for this board is VS520DZR1B. If you are unsure, contact Western Tub and Pool before ordering.
Not Sure If This Is the Right Board for You?
Here's how to confirm your part:
1. Check Your Chip Number
Locate the white sticker on the front or back of your existing circuit board. The chip number — in this case VS520DZR1B — is printed there.
2. Find Your Part Number
Look for a five-digit number on the board itself. For this board, that number is 55152.
3. Know Your Hot Tub's Make, Model, and Serial Number
These details help our team confirm you're ordering the right part the first time.
4. Still Not Sure? Send Us a Photo
Email a clear photo of your existing circuit board — along with your spa's make, model, and serial number — to fixmytub@gmail.com and our team will help you identify the correct replacement.
Frequently Asked Questions
Is this circuit board new or refurbished?
This is a brand new Balboa VS520DZ Circuit Board. All units sold by Western Tub and Pool are new, genuine parts.
Why is this board hard to find?
Balboa Water Group has discontinued the VS520DZ Circuit Board (33-55152-K) without a direct replacement substitute. Western Tub and Pool has sourced remaining new stock, but availability is limited.
Can I install this circuit board myself?
Yes. Many spa owners replace circuit boards themselves using basic tools. Balboa Water Group has published installation guides and video tutorials to assist with the process. That said, if you are not confident working with electrical components, we recommend consulting a qualified spa technician.
What if I am not sure this is the right board for my hot tub?
Do not order based on appearance alone. Multiple Balboa boards look nearly identical. Call us at 1-855-248-0777 or email fixmytub@gmail.com with your chip number, part number, or photos of your existing board. We will confirm the correct part before you purchase.
What warranty comes with this circuit board?
This board carries a 1-year manufacturer's warranty from the date of purchase. Circuit boards may only be returned for verified warranty issues.
Does Western Tub and Pool offer support after purchase?
Absolutely. Our team is available by phone and email to assist with part identification, installation questions, and any other spa-related support you need. Western Tub and Pool also offers free at-home tutorials for hot tub, swim spa, and pool maintenance — because we believe proper care should be accessible to everyone.
Why Shop at Western Tub and Pool?
Western Tub and Pool specializes in genuine, hard-to-find spa and hot tub replacement parts. We understand how frustrating it is when your hot tub goes down — especially when the part you need is discontinued or difficult to source. Our team knows these products inside and out, and we're here to make the repair process as smooth as possible.
Whether you know exactly what you need or you're starting from scratch with a broken board and no part number in hand, we can help.
Genuine new parts — not refurbished, not knockoffs
Expert part identification assistance — just send us a photo
Real people, real support — phone and email, no bots
Free at-home spa tutorials for ongoing maintenance
Limited discontinued stock available now
Get the Balboa VS520DZ Circuit Board Today
Stock is limited and no direct replacement exists once this part is gone. If your spa runs on a VS520DZ Balboa control system, act now.
Shop and order at Western Tub and Pool.
Call: 1-855-248-0777
Email: fixmytub@gmail.com
When reaching out, please have the following ready if possible:
Your existing circuit board's chip number (found on the white sticker on the board)
Your hot tub's make, model, and serial number
A photo of the board if the chip number is not visible
Our team will confirm your part and get your order processed quickly so you can get back to enjoying your hot tub.
[Call 1-855-248-0777] [Email fixmytub@gmail.com]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4427/6682/33-55152-k__03102.1783196224.PNG?c=2 "Balboa VS520DZ Circuit Board 33-55152-K — Get Yours Before They're Gone
Is your hot tub acting up? If your spa runs a Balboa VS520DZ control system, this circuit board is the part you need. The Balboa VS520DZ Circuit Board (Part No. 33-55152-K) is a genuine, new replacement PCB built for VS520DZ control boxes — and because it has been discontinued by the manufacturer, stock is extremely limited. Shop and order at Western Tub and Pool before it sells out.
[Call Us Now: 1-855-248-0777] [Email: fixmytub@gmail.com]
Why This Circuit Board Matters
When your spa's circuit board fails, everything stops — heating, jets, controls. Replacing it with the exact correct board gets your hot tub back up and running fast. The Balboa VS520DZ Circuit Board is the brain of the VS520DZ control system, and getting the right one matters more than most people realize.
This is a hard-to-find, discontinued part. Western Tub and Pool has new units in stock. Once they're gone, they're gone. Don't wait.
Product Specifications
Specification
Detail
Brand
Balboa Water Group
Part Number
33-55152-K
Alternate Part Number
55152 / 55152-01
Item Type
PCB (Printed Circuit Board) — Serial Deluxe
Chip Number
VS520DZR1B
Connection Type
8-Pin Phone Style Cable
System Voltage
115/230V
Heater Version
Flow-Thru
Heater Wattage
5.5kW
Supported Components
Pump 1 + Pump 2 + Blower
Technology
Balboa Patented M7® Temperature & Water Flow Sensing
Weight
1.00 lb
Warranty
1 Year from Manufacturer
Condition
New
Availability
Limited Stock — Discontinued by Manufacturer
What Is the VS520DZ Circuit Board Used In?
The Balboa VS520DZ Circuit Board (chip number VS520DZR1B) is designed specifically for VS520DZ control boxes and control packs. It is part of Balboa's Value Series (VS) family, which was used across a wide range of hot tub and spa brands.
Compatible spa control systems and brands that commonly used VS520DZ Balboa control packs include:
Great Lakes Spas — GVS500, GVS500SZ, GVS501, GVS510, GVS511, and GVS511SZ series
Leisure Bay Spas — VS120R and VS240R series
Master Spas — VS 501 and VS 510 Pack series
Hydro Spa — HS200VS series
Cal Spa — Models using VS300FC control packs
Keys Backyard Spas — Various models using VS series Balboa control systems
Nordic Spas — Models using NORVS300 control systems
Many private-label spa brands that used Balboa VS520DZ factory control packs
Important: Do not order a circuit board based on looks alone. Several Balboa boards appear identical but contain different chips and software. Always verify using the chip number found on a small white sticker near the center of your board. The chip number for this board is VS520DZR1B. If you are unsure, contact Western Tub and Pool before ordering.
Not Sure If This Is the Right Board for You?
Here's how to confirm your part:
1. Check Your Chip Number
Locate the white sticker on the front or back of your existing circuit board. The chip number — in this case VS520DZR1B — is printed there.
2. Find Your Part Number
Look for a five-digit number on the board itself. For this board, that number is 55152.
3. Know Your Hot Tub's Make, Model, and Serial Number
These details help our team confirm you're ordering the right part the first time.
4. Still Not Sure? Send Us a Photo
Email a clear photo of your existing circuit board — along with your spa's make, model, and serial number — to fixmytub@gmail.com and our team will help you identify the correct replacement.
Frequently Asked Questions
Is this circuit board new or refurbished?
This is a brand new Balboa VS520DZ Circuit Board. All units sold by Western Tub and Pool are new, genuine parts.
Why is this board hard to find?
Balboa Water Group has discontinued the VS520DZ Circuit Board (33-55152-K) without a direct replacement substitute. Western Tub and Pool has sourced remaining new stock, but availability is limited.
Can I install this circuit board myself?
Yes. Many spa owners replace circuit boards themselves using basic tools. Balboa Water Group has published installation guides and video tutorials to assist with the process. That said, if you are not confident working with electrical components, we recommend consulting a qualified spa technician.
What if I am not sure this is the right board for my hot tub?
Do not order based on appearance alone. Multiple Balboa boards look nearly identical. Call us at 1-855-248-0777 or email fixmytub@gmail.com with your chip number, part number, or photos of your existing board. We will confirm the correct part before you purchase.
What warranty comes with this circuit board?
This board carries a 1-year manufacturer's warranty from the date of purchase. Circuit boards may only be returned for verified warranty issues.
Does Western Tub and Pool offer support after purchase?
Absolutely. Our team is available by phone and email to assist with part identification, installation questions, and any other spa-related support you need. Western Tub and Pool also offers free at-home tutorials for hot tub, swim spa, and pool maintenance — because we believe proper care should be accessible to everyone.
Why Shop at Western Tub and Pool?
Western Tub and Pool specializes in genuine, hard-to-find spa and hot tub replacement parts. We understand how frustrating it is when your hot tub goes down — especially when the part you need is discontinued or difficult to source. Our team knows these products inside and out, and we're here to make the repair process as smooth as possible.
Whether you know exactly what you need or you're starting from scratch with a broken board and no part number in hand, we can help.
Genuine new parts — not refurbished, not knockoffs
Expert part identification assistance — just send us a photo
Real people, real support — phone and email, no bots
Free at-home spa tutorials for ongoing maintenance
Limited discontinued stock available now
Get the Balboa VS520DZ Circuit Board Today
Stock is limited and no direct replacement exists once this part is gone. If your spa runs on a VS520DZ Balboa control system, act now.
Shop and order at Western Tub and Pool.
Call: 1-855-248-0777
Email: fixmytub@gmail.com
When reaching out, please have the following ready if possible:
Your existing circuit board's chip number (found on the white sticker on the board)
Your hot tub's make, model, and serial number
A photo of the board if the chip number is not visible
Our team will confirm your part and get your order processed quickly so you can get back to enjoying your hot tub.
[Call 1-855-248-0777] [Email fixmytub@gmail.com]")
![Balboa VS513Z Circuit Board 33-55840-K — Genuine Replacement Part
Part Number: 33-55840-K | Chip Number: VS513ZR1B | Brand: Balboa Water Group
Is your hot tub acting up? A faulty circuit board could be the culprit. Shop and order at Western Tub and Pool — your trusted source for genuine, hard-to-find spa repair parts, delivered fast.
[Order Now — Call 1-855-248-0777] [Email Us at fixmytub@gmail.com]
What Is the Balboa VS513Z Circuit Board (33-55840-K)?
The Balboa VS513Z Circuit Board (Part No. 33-55840-K, also referenced as 55840-01) is a genuine OEM-grade printed circuit board (PCB) designed for VS513Z spa control systems. It serves as the brain of your hot tub's control pack, managing everything from pump speed and heating to lighting and ozone output.
This is a new replacement board — not refurbished — built by Balboa Water Group, one of the most trusted names in spa electronics.
Key Features and Specifications
System Outputs (As Manufactured — Setup 1)
Pump 1: 240V, 2-Speed (dual speed)
Pump 2: 240V, 1-Speed (single speed)
Blower/Pump 3: 120V, 1-Speed
Ozone: 120V (factory configured; voltage adjustable)
Spa Light: 12V
AV/Stereo: 120V
Heater: 240V, 5.5kW
Circ Pump: 120V (optional)
Power Requirements
Voltage: 240VAC, 60Hz
Amperage: 48A, Class A GFCI-protected service
Circuit Breaker Rating: 60A maximum
Wiring: 4-wire [hot, hot, neutral, ground]
Compatible Panels
VL400 Panel (PN 55129) — requires software v38 or higher
Compatible with Digital Duplex and Light Duplex panel configurations
Works with Mini Panel configurations (DIP switch adjustable)
Additional Compatible Accessories
Full Feature Dolphin Remote
Spa-only Dolphin Remote
FiberEFX Lighting (connects to Spa Light terminal J20)
MoodEFX Lighting (connects to Spa Light terminal J20)
Software
Software Version: 43
System PN: 55839-02
System Model: VSP-VS513Z-BCAH
Dimensions and Weight
Specification
Detail
Part Number
33-55840-K / 55840-01
Chip Number
VS513ZR1B
Circuit Board Weight
4.00 lbs
Full Control System Weight
10 lbs
Full Control System Dimensions
18 × 12 × 10 inches
Voltage
240VAC
Heater Output
5.5kW
Amperage
48A
Compatible Hot Tub Series and Models
The Balboa VS513Z Circuit Board (33-55840-K) is primarily used in Cal Spas hot tubs built around the 4230B and 6230B series control systems. It is designed as a Duplex configuration board for these series.
Compatible Control Series:
Cal Spas 4230B Series
Cal Spas 6230B Series
How to confirm compatibility with your spa:
Locate the sticker on your existing circuit board — it will display the chip number or part number
Match your chip number (VS513ZR1B) or part number (55840-01 / 33-55840-K) to confirm fitment
Check your system model number — look for VS513Z on your control pack label
If you are unsure, take a photo of your existing board and contact us — we're here to help
Not sure if this board fits your spa? Call us at 1-855-248-0777 or email fixmytub@gmail.com with your spa's make, model, serial number, and a photo of your existing board. We'll confirm compatibility before you order.
Frequently Asked Questions
What does the Balboa VS513Z circuit board do?
The VS513Z circuit board is the central control component of your spa's pack system. It manages all key functions, including pump speed control, heating, lighting, ozone output, and blower operation. When this board fails, your spa may stop heating, display error codes, or fail to respond to panel controls.
How do I know if I need to replace my circuit board?
Common signs of a failing circuit board include: error codes on your topside control panel, pumps or the heater not responding, intermittent power issues, or visible burn marks and damaged components on the board itself.
Is this a new or refurbished board?
This is a brand-new Balboa VS513Z circuit board. Western Tub and Pool supplies new, genuine replacement parts — not refurbished or used components.
What if I can't find my part number?
No problem. Send us an email at fixmytub@gmail.com with:
Photos of your existing circuit board (front and back)
Your spa's make and model
Your spa's serial number (usually found on a sticker on the cabinet exterior)
We'll help you identify the correct part before you order.
Can I install this board myself?
Many experienced DIYers can replace a hot tub circuit board with the right guidance. Balboa provides printed circuit board universal replacement instructions with this board. That said, if you are unfamiliar with electrical systems, we strongly recommend hiring a licensed spa technician. Always disconnect power before handling any electrical components.
What is the ozone connector voltage on this board?
The VS513Z circuit board is factory configured to deliver a preset voltage (either 120V or 240V) to the on-board ozone connector (J29). The voltage can be adjusted in the field if required. Important: Changing the ozone connector voltage also affects the voltage supplied to the circ pump connector (J47) — always verify before making changes.
Do I need to reset the board's persistent memory after installation?
Yes. Any time you change a DIP switch setting (other than A1), you must reset persistent memory for the new settings to take effect. To reset: power down the spa, place a jumper across J43 (covering both pins), power up until the panel displays the ready signal, then power down again, remove the jumper, and power back up.
Can I reach Western Tub and Pool for installation support?
Absolutely. Call us at 1-855-248-0777 or email fixmytub@gmail.com. Our team specializes in hard-to-find spa parts and can walk you through the identification and replacement process.
Hard-to-Find Part? We Can Help.
Sourcing obscure or discontinued spa parts is what we do best. If you've been searching without success, Western Tub and Pool is your answer.
To get the right part fast, have the following ready:
Your part number (if known): 33-55840-K or 55840-01
Your spa's make and model
Your spa's serial number
Photos of the existing board (front and back) — helpful if the label is damaged or missing
Contact Western Tub and Pool:
Phone: 1-855-248-0777
Email: fixmytub@gmail.com
We carry replacement parts for a wide range of hot tub brands and control systems. If you need a part that isn't listed in our online catalogue, reach out — chances are, we can track it down.
Shop and Order at Western Tub and Pool
Ready to get your spa running again? Shop and order at Western Tub and Pool — your go-to source for genuine Balboa replacement parts and hard-to-find spa components.
Call: 1-855-248-0777
Email: fixmytub@gmail.com
[Shop Our Online Catalogue] [Call to Order Now]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4426/6681/33-55840-k__72894.1783195243.PNG?c=2 "Balboa VS513Z Circuit Board 33-55840-K — Genuine Replacement Part
Part Number: 33-55840-K | Chip Number: VS513ZR1B | Brand: Balboa Water Group
Is your hot tub acting up? A faulty circuit board could be the culprit. Shop and order at Western Tub and Pool — your trusted source for genuine, hard-to-find spa repair parts, delivered fast.
[Order Now — Call 1-855-248-0777] [Email Us at fixmytub@gmail.com]
What Is the Balboa VS513Z Circuit Board (33-55840-K)?
The Balboa VS513Z Circuit Board (Part No. 33-55840-K, also referenced as 55840-01) is a genuine OEM-grade printed circuit board (PCB) designed for VS513Z spa control systems. It serves as the brain of your hot tub's control pack, managing everything from pump speed and heating to lighting and ozone output.
This is a new replacement board — not refurbished — built by Balboa Water Group, one of the most trusted names in spa electronics.
Key Features and Specifications
System Outputs (As Manufactured — Setup 1)
Pump 1: 240V, 2-Speed (dual speed)
Pump 2: 240V, 1-Speed (single speed)
Blower/Pump 3: 120V, 1-Speed
Ozone: 120V (factory configured; voltage adjustable)
Spa Light: 12V
AV/Stereo: 120V
Heater: 240V, 5.5kW
Circ Pump: 120V (optional)
Power Requirements
Voltage: 240VAC, 60Hz
Amperage: 48A, Class A GFCI-protected service
Circuit Breaker Rating: 60A maximum
Wiring: 4-wire [hot, hot, neutral, ground]
Compatible Panels
VL400 Panel (PN 55129) — requires software v38 or higher
Compatible with Digital Duplex and Light Duplex panel configurations
Works with Mini Panel configurations (DIP switch adjustable)
Additional Compatible Accessories
Full Feature Dolphin Remote
Spa-only Dolphin Remote
FiberEFX Lighting (connects to Spa Light terminal J20)
MoodEFX Lighting (connects to Spa Light terminal J20)
Software
Software Version: 43
System PN: 55839-02
System Model: VSP-VS513Z-BCAH
Dimensions and Weight
Specification
Detail
Part Number
33-55840-K / 55840-01
Chip Number
VS513ZR1B
Circuit Board Weight
4.00 lbs
Full Control System Weight
10 lbs
Full Control System Dimensions
18 × 12 × 10 inches
Voltage
240VAC
Heater Output
5.5kW
Amperage
48A
Compatible Hot Tub Series and Models
The Balboa VS513Z Circuit Board (33-55840-K) is primarily used in Cal Spas hot tubs built around the 4230B and 6230B series control systems. It is designed as a Duplex configuration board for these series.
Compatible Control Series:
Cal Spas 4230B Series
Cal Spas 6230B Series
How to confirm compatibility with your spa:
Locate the sticker on your existing circuit board — it will display the chip number or part number
Match your chip number (VS513ZR1B) or part number (55840-01 / 33-55840-K) to confirm fitment
Check your system model number — look for VS513Z on your control pack label
If you are unsure, take a photo of your existing board and contact us — we're here to help
Not sure if this board fits your spa? Call us at 1-855-248-0777 or email fixmytub@gmail.com with your spa's make, model, serial number, and a photo of your existing board. We'll confirm compatibility before you order.
Frequently Asked Questions
What does the Balboa VS513Z circuit board do?
The VS513Z circuit board is the central control component of your spa's pack system. It manages all key functions, including pump speed control, heating, lighting, ozone output, and blower operation. When this board fails, your spa may stop heating, display error codes, or fail to respond to panel controls.
How do I know if I need to replace my circuit board?
Common signs of a failing circuit board include: error codes on your topside control panel, pumps or the heater not responding, intermittent power issues, or visible burn marks and damaged components on the board itself.
Is this a new or refurbished board?
This is a brand-new Balboa VS513Z circuit board. Western Tub and Pool supplies new, genuine replacement parts — not refurbished or used components.
What if I can't find my part number?
No problem. Send us an email at fixmytub@gmail.com with:
Photos of your existing circuit board (front and back)
Your spa's make and model
Your spa's serial number (usually found on a sticker on the cabinet exterior)
We'll help you identify the correct part before you order.
Can I install this board myself?
Many experienced DIYers can replace a hot tub circuit board with the right guidance. Balboa provides printed circuit board universal replacement instructions with this board. That said, if you are unfamiliar with electrical systems, we strongly recommend hiring a licensed spa technician. Always disconnect power before handling any electrical components.
What is the ozone connector voltage on this board?
The VS513Z circuit board is factory configured to deliver a preset voltage (either 120V or 240V) to the on-board ozone connector (J29). The voltage can be adjusted in the field if required. Important: Changing the ozone connector voltage also affects the voltage supplied to the circ pump connector (J47) — always verify before making changes.
Do I need to reset the board's persistent memory after installation?
Yes. Any time you change a DIP switch setting (other than A1), you must reset persistent memory for the new settings to take effect. To reset: power down the spa, place a jumper across J43 (covering both pins), power up until the panel displays the ready signal, then power down again, remove the jumper, and power back up.
Can I reach Western Tub and Pool for installation support?
Absolutely. Call us at 1-855-248-0777 or email fixmytub@gmail.com. Our team specializes in hard-to-find spa parts and can walk you through the identification and replacement process.
Hard-to-Find Part? We Can Help.
Sourcing obscure or discontinued spa parts is what we do best. If you've been searching without success, Western Tub and Pool is your answer.
To get the right part fast, have the following ready:
Your part number (if known): 33-55840-K or 55840-01
Your spa's make and model
Your spa's serial number
Photos of the existing board (front and back) — helpful if the label is damaged or missing
Contact Western Tub and Pool:
Phone: 1-855-248-0777
Email: fixmytub@gmail.com
We carry replacement parts for a wide range of hot tub brands and control systems. If you need a part that isn't listed in our online catalogue, reach out — chances are, we can track it down.
Shop and Order at Western Tub and Pool
Ready to get your spa running again? Shop and order at Western Tub and Pool — your go-to source for genuine Balboa replacement parts and hard-to-find spa components.
Call: 1-855-248-0777
Email: fixmytub@gmail.com
[Shop Our Online Catalogue] [Call to Order Now]")
![Balboa VS511Z Circuit Board (Part #33-54383-K) — New Replacement Board
Get your hot tub running again with a brand-new Balboa VS511Z Duplex Digital Circuit Board, one of the most trusted replacement boards in the spa industry. Whether your current board has failed, burnt out, or simply stopped responding, this is the genuine replacement you need — and Western Tub and Pool has it in stock.
[Shop and Order at Western Tub and Pool — Call 1-855-248-0777]
What Is the Balboa VS511Z Circuit Board?
The Balboa VS511Z (Part #33-54383-K) is a Duplex Digital circuit board manufactured by Balboa Water Group, designed for use in VS511Z spa control systems. It is a direct, factory-new replacement for a wide range of Balboa-powered hot tubs and spas.
Also known as / replaces the following part numbers:
33-54383-K (HydroQuip)
54383-04 (Balboa Water Group base PCBA)
54385-03
33-0033A-K
33-54385-K
402238
GVS511SZR1A
VS511SZ
VS511SZR2
Compatible chip numbers (found on the white sticker near the center of your board):
VS511ZR2E
VS511ZR2A-E
SVS511R1A
VS511Z
Key Features and Specifications
Dual Pump Support
The VS511Z supports two 2-speed pumps, making it ideal for spas that run multiple jet pumps simultaneously. No blower connection is required.
Circ Pump Ready
This board includes a circulation pump option, supporting energy-efficient 24-hour filtration modes — configurable via DIP switch settings.
Ozone Connector Included
An on-board ozone connector (J29) supports both 120V and 240V ozone generators, giving you flexibility depending on your spa's configuration.
Multiple Compatible Topside Panels
The VS511Z works seamlessly with the following Balboa topside control panels:
VL401 – LCD Lite Duplex (PN 54251)
VL402 – LCD Duplex Digital (PN 54107)
VL403 – LED Lite Duplex (PN 54104-01)
VL404 – LED Duplex Digital (PN 51248)
Battery-Free Persistent Memory
Stores your filter settings, set temperature, and heat mode — no battery required. Settings are retained even after a power interruption.
Flexible Operating Modes
DIP switch configurable for:
Standard, Economy, and Sleep modes
50Hz or 60Hz operation
Celsius or Fahrenheit temperature display
Phone-Style Plug Connection
Features a phone-style cable plug, compatible with standard Balboa Duplex panel wiring setups.
Compatible Control Systems
The Balboa VS511Z circuit board (54383-04) is used in the following Balboa VS511Z and VS511SZ spa control systems:
System Part Number
System Type
Compatible Heater
54382-01
VS511Z
58121
54382-02
VS511Z
58121
54382-03
VS511Z
58121
54382-04
VS511Z
58121
54384
VS511SZ
58121
54384-02
VS511SZ
58083
54384-03
VS511SZ
58083
54384-04
VS511SZ
58083
55053-01
VS511SZ
58104
55053-03
VS511SZ
58104
These control systems are found in a wide range of Balboa-powered Duplex Digital hot tubs, including spas from the 4220B and 6220B series. Associated spa brands that have historically used Balboa VS511Z series control systems include, but may not be limited to:
Great Lakes Spas (GVS511 / GVS511SZ series)
Keys Backyard Spas (Duplex Digital models)
Various OEM spa brands using Balboa VS Duplex Digital systems
Not sure if this board fits your spa? That's what we're here for. Call us at 1-855-248-0777 or email fixmytub@gmail.com and we'll help you confirm the right part before you order.
How to Identify Your Circuit Board
Ordering the wrong circuit board is a costly mistake — and an easy one to make, because many Balboa boards look nearly identical. Here's how to make sure you're ordering the right one:
Locate the chip number: Find the small white sticker near the center of your existing circuit board. The chip number — not the board's appearance — is what identifies it.
Note your five-digit board number: Most Balboa boards have a five-digit number (e.g., 54383) printed or labeled on the board.
Gather your spa details: Your spa's make, model, and serial number will help us cross-reference your part quickly.
Send us a photo: If you're unsure, email a clear photo of your existing board to fixmytub@gmail.com and our team will confirm the match.
Important: Do not order a circuit board based on looks alone. Multiple boards share the same appearance but contain different chips and software. Always verify using the chip number or contact us first.
Frequently Asked Questions
Is this a new board or a refurbished one?
This is a brand-new Balboa VS511Z circuit board — never installed, factory fresh. You won't receive a rebuilt or refurbished unit.
How do I know if this is the right board for my spa?
The most reliable way is to match the chip number on your existing board (found on a white sticker near the board's center) to the compatible chip numbers listed above: VS511ZR2E, VS511ZR2A-E, SVS511R1A, or VS511Z. If you're still unsure, call us at 1-855-248-0777 or email a photo of your board to fixmytub@gmail.com.
What part numbers does this board replace?
This board replaces: 33-0033A-K, 33-54385-K, 402238, 54385-03, GVS511SZR1A, VS511SZ, and VS511SZR2.
What topside control panels are compatible with this board?
The VS511Z is compatible with the VL401 (LCD Lite Duplex), VL402 (LCD Duplex Digital), VL403 (LED Lite Duplex), and VL404 (LED Duplex Digital) panels.
Can I return this board if it doesn't fit?
Circuit boards are non-returnable once purchased, as they cannot be resold as new to another spa owner. This is why we strongly encourage you to verify your part number before ordering. Our team is happy to assist — just call or email us before purchasing.
Do you carry other Balboa parts or spa components?
Yes. Western Tub and Pool carries a wide range of hot tub and spa repair parts, including hard-to-find components. If you can't find what you need in our catalogue, give us a call and we'll do our best to source it for you.
What if I can't find my part number anywhere?
We specialize in hard-to-find spa parts. Send us an email at fixmytub@gmail.com with your spa's make, model, and serial number, along with any photos of the existing part, and we'll track down what you need.
Shop and Order at Western Tub and Pool
Don't let a failed circuit board put your hot tub out of commission. The Balboa VS511Z (33-54383-K) is a proven, reliable replacement that will have your spa back up and running.
Call us: 1-855-248-0777
Email us: fixmytub@gmail.com
Browse our catalogue for a full range of Balboa circuit boards, spa packs, topside panels, heaters, and more.
[Shop and Order at Western Tub and Pool]
Not sure this is the right part? Send us your spa's make, model, serial number, or a photo of your existing board at fixmytub@gmail.com — we'll confirm the correct part number before you order.](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4425/6680/33-54383-k__38392.1783193373.PNG?c=2 "Balboa VS511Z Circuit Board (Part #33-54383-K) — New Replacement Board
Get your hot tub running again with a brand-new Balboa VS511Z Duplex Digital Circuit Board, one of the most trusted replacement boards in the spa industry. Whether your current board has failed, burnt out, or simply stopped responding, this is the genuine replacement you need — and Western Tub and Pool has it in stock.
[Shop and Order at Western Tub and Pool — Call 1-855-248-0777]
What Is the Balboa VS511Z Circuit Board?
The Balboa VS511Z (Part #33-54383-K) is a Duplex Digital circuit board manufactured by Balboa Water Group, designed for use in VS511Z spa control systems. It is a direct, factory-new replacement for a wide range of Balboa-powered hot tubs and spas.
Also known as / replaces the following part numbers:
33-54383-K (HydroQuip)
54383-04 (Balboa Water Group base PCBA)
54385-03
33-0033A-K
33-54385-K
402238
GVS511SZR1A
VS511SZ
VS511SZR2
Compatible chip numbers (found on the white sticker near the center of your board):
VS511ZR2E
VS511ZR2A-E
SVS511R1A
VS511Z
Key Features and Specifications
Dual Pump Support
The VS511Z supports two 2-speed pumps, making it ideal for spas that run multiple jet pumps simultaneously. No blower connection is required.
Circ Pump Ready
This board includes a circulation pump option, supporting energy-efficient 24-hour filtration modes — configurable via DIP switch settings.
Ozone Connector Included
An on-board ozone connector (J29) supports both 120V and 240V ozone generators, giving you flexibility depending on your spa's configuration.
Multiple Compatible Topside Panels
The VS511Z works seamlessly with the following Balboa topside control panels:
VL401 – LCD Lite Duplex (PN 54251)
VL402 – LCD Duplex Digital (PN 54107)
VL403 – LED Lite Duplex (PN 54104-01)
VL404 – LED Duplex Digital (PN 51248)
Battery-Free Persistent Memory
Stores your filter settings, set temperature, and heat mode — no battery required. Settings are retained even after a power interruption.
Flexible Operating Modes
DIP switch configurable for:
Standard, Economy, and Sleep modes
50Hz or 60Hz operation
Celsius or Fahrenheit temperature display
Phone-Style Plug Connection
Features a phone-style cable plug, compatible with standard Balboa Duplex panel wiring setups.
Compatible Control Systems
The Balboa VS511Z circuit board (54383-04) is used in the following Balboa VS511Z and VS511SZ spa control systems:
System Part Number
System Type
Compatible Heater
54382-01
VS511Z
58121
54382-02
VS511Z
58121
54382-03
VS511Z
58121
54382-04
VS511Z
58121
54384
VS511SZ
58121
54384-02
VS511SZ
58083
54384-03
VS511SZ
58083
54384-04
VS511SZ
58083
55053-01
VS511SZ
58104
55053-03
VS511SZ
58104
These control systems are found in a wide range of Balboa-powered Duplex Digital hot tubs, including spas from the 4220B and 6220B series. Associated spa brands that have historically used Balboa VS511Z series control systems include, but may not be limited to:
Great Lakes Spas (GVS511 / GVS511SZ series)
Keys Backyard Spas (Duplex Digital models)
Various OEM spa brands using Balboa VS Duplex Digital systems
Not sure if this board fits your spa? That's what we're here for. Call us at 1-855-248-0777 or email fixmytub@gmail.com and we'll help you confirm the right part before you order.
How to Identify Your Circuit Board
Ordering the wrong circuit board is a costly mistake — and an easy one to make, because many Balboa boards look nearly identical. Here's how to make sure you're ordering the right one:
Locate the chip number: Find the small white sticker near the center of your existing circuit board. The chip number — not the board's appearance — is what identifies it.
Note your five-digit board number: Most Balboa boards have a five-digit number (e.g., 54383) printed or labeled on the board.
Gather your spa details: Your spa's make, model, and serial number will help us cross-reference your part quickly.
Send us a photo: If you're unsure, email a clear photo of your existing board to fixmytub@gmail.com and our team will confirm the match.
Important: Do not order a circuit board based on looks alone. Multiple boards share the same appearance but contain different chips and software. Always verify using the chip number or contact us first.
Frequently Asked Questions
Is this a new board or a refurbished one?
This is a brand-new Balboa VS511Z circuit board — never installed, factory fresh. You won't receive a rebuilt or refurbished unit.
How do I know if this is the right board for my spa?
The most reliable way is to match the chip number on your existing board (found on a white sticker near the board's center) to the compatible chip numbers listed above: VS511ZR2E, VS511ZR2A-E, SVS511R1A, or VS511Z. If you're still unsure, call us at 1-855-248-0777 or email a photo of your board to fixmytub@gmail.com.
What part numbers does this board replace?
This board replaces: 33-0033A-K, 33-54385-K, 402238, 54385-03, GVS511SZR1A, VS511SZ, and VS511SZR2.
What topside control panels are compatible with this board?
The VS511Z is compatible with the VL401 (LCD Lite Duplex), VL402 (LCD Duplex Digital), VL403 (LED Lite Duplex), and VL404 (LED Duplex Digital) panels.
Can I return this board if it doesn't fit?
Circuit boards are non-returnable once purchased, as they cannot be resold as new to another spa owner. This is why we strongly encourage you to verify your part number before ordering. Our team is happy to assist — just call or email us before purchasing.
Do you carry other Balboa parts or spa components?
Yes. Western Tub and Pool carries a wide range of hot tub and spa repair parts, including hard-to-find components. If you can't find what you need in our catalogue, give us a call and we'll do our best to source it for you.
What if I can't find my part number anywhere?
We specialize in hard-to-find spa parts. Send us an email at fixmytub@gmail.com with your spa's make, model, and serial number, along with any photos of the existing part, and we'll track down what you need.
Shop and Order at Western Tub and Pool
Don't let a failed circuit board put your hot tub out of commission. The Balboa VS511Z (33-54383-K) is a proven, reliable replacement that will have your spa back up and running.
Call us: 1-855-248-0777
Email us: fixmytub@gmail.com
Browse our catalogue for a full range of Balboa circuit boards, spa packs, topside panels, heaters, and more.
[Shop and Order at Western Tub and Pool]
Not sure this is the right part? Send us your spa's make, model, serial number, or a photo of your existing board at fixmytub@gmail.com — we'll confirm the correct part number before you order.")
![Balboa VS510SZ Circuit Board (33-54372-K)
Your hot tub stopped working — and tracking down the right replacement circuit board shouldn't make things worse. At Western Tub and Pool, we stock recycled Balboa VS510SZ Circuit Boards (part number 33-54372-K) so you can get your spa up and running again without the wait or the premium price tag.
Shop and order at Western Tub and Pool — your trusted source for hard-to-find hot tub spa replacement parts.
Call us: 1-855-248-0777
[Shop Now] [Email Us for Help]
What Is the Balboa VS510SZ Circuit Board (33-54372-K)?
The Balboa VS510SZ Circuit Board (OEM part number 54372-03, cross-reference 33-54372-K) is the printed circuit board (PCB) at the heart of the Balboa VS510SZ spa control system. It manages your hot tub's pumps, heater, blower, circulation pump, ozonator, and lighting — all from one central board.
This is a recycled replacement board sourced and sold by Western Tub and Pool. It delivers the same core functionality as your original board and is compatible with a wide range of spa brands and models.
Key Features & Technical Specifications
What This Board Controls
Pump 1: Dual speed (2-speed primary pump) — 12A max
Pump 2: Single speed (1-speed secondary pump) — 12A max
Blower/Pump 3: Single speed — 12A max
Circulation Pump: Supported (required flow rate: 25 GPM) — 4A max
Ozonator/UVC: Supported — 1A max
Lighting: Supported — 1A max
Heater Output: 23A max
Electrical Input
Single Phase, 120/240VAC, 60Hz
Compatible Topside Keypads
Digital Duplex and Lite Duplex topside control keypads
Compatible keypad models: VL700S, VL701S, VL702S, 53811, 53189, 54652
Compatible with M7 Sensors
Yes — this board supports Balboa M7 sensor technology
Board Dimensions
Approximately 11 inches x 11 inches x 5 inches
Associated Chip Numbers
This board is associated with the following chip numbers:
VS510SZR2D, VS510SZR2C, VS510SZR2B, VS510SZR2A, VS510SZR2, VS510SZR1A, VS510SR2B, VS510SR1B, VS510SR1A, HS200VSR2B, HS200VSR2A, KEYS211DR1B, KEYS211DR1A, KEYS2110R1A, NW300R1A
Cross-Reference Part Numbers
Not sure if this is the right board? This circuit board replaces a wide range of discontinued and OEM part numbers, including:
54372-01, 54372-02, 54372-03, 54371-01, 54371HC1, 54218-Z, 54345, 54344, 54757, 54376, 54559, 55098-01, 55099-01, 55196, 55197, 56658, 53753, 53752, 53533, 53534, KEYS211D, K211D4K, 3-60-0079, 055036, 33-0033, 33-0033-K, 59-138-1684, 59-355-1684, HS200VSR2C, HS200M7, HS200VSR2B, KEYS211DR1B, VS510SR2B, GVS500SZ, G1154, 10-175-2002
Note: If you are replacing a board in a Viking Spa or similar brand, ensure your pumps are rated no more than 230V / 12A before installing this board.
Hot Tub Brands & Models That Use This Circuit Board
The Balboa VS510SZ circuit board is found in a wide range of hot tub brands. If your spa uses a Balboa VS510SZ control system, this board is the replacement you need. Compatible brands include:
Keys Backyard spas
Icon spas
Weslo spas
Hydro Spas
Viking Spas (ensure pumps are rated no more than 230V / 12A)
HydroQuip branded spa systems
Any hot tub running the Balboa VS510SZ Value Series control system
Not sure if your hot tub is on the list? Check the model ID label on top of your spa's control system. If it reads VS510SZ, this is your board. You can also call us directly at 1-855-248-0777 or email us at fixmytub@gmail.com and we'll help you confirm compatibility.
Frequently Asked Questions
How do I know this is the right circuit board for my spa?
The most reliable way to confirm compatibility is to locate the Model ID Label on top of your hot tub's control system enclosure. If it reads "VS510SZ," this board is a match. You can also cross-reference your existing board's part number or chip number against the lists above. Still unsure? Send us a photo of your board and control box — we'll identify it for you.
What is the condition of this circuit board?
This is a new circuit board sold by Western Tub and Pool. If you have questions about the condition of a specific board in our inventory, please contact us before ordering.
Does this board come pre-configured?
Configuration requirements vary depending on your spa's pump voltages, blower setup, and ozonator. DIP switches on the board may need to be set to match your system. If you need guidance, call us at 1-855-248-0777 — our team is here to help walk you through it.
What if my pumps are wired differently from the original board?
When installing any replacement VS510SZ board, make sure to match the white power wires from your original board. On some models, DIP switches will also need to be adjusted to enable features like the circulation pump, amperage limits, or pump speeds. If you run into trouble, send us photos and we'll assist.
Can this board replace my Viking Spa circuit board?
Yes — with one important note. If you are installing this board in a Viking Spa or similar brand, your pumps must be rated no more than 230V / 12A. Installing this board with higher-rated pumps may cause damage.
What if I don't know my part number?
No problem. Send us an email at fixmytub@gmail.com with the following and we'll do the research for you:
Photos of your existing circuit board (front and back)
Your hot tub's make and model
Your hot tub's serial number
Do you carry other Balboa circuit boards or spa parts?
Yes. Western Tub and Pool carries a wide range of recycled hot tub and spa replacement parts. Check our online catalogue or call us at 1-855-248-0777 to find the part you need.
Can't Find Your Part? We Can Help.
Hard-to-find spa parts are our specialty. If you're not sure what you need, don't guess — reach out and let us help you get it right the first time.
Email:fixmytub@gmail.com
Phone: 1-855-248-0777
Send us your part number if you have it, or email us photos of your circuit board along with your hot tub's make, model, and serial number. Our team will identify the correct replacement and confirm availability.
Shop and order at Western Tub and Pool — and get your hot tub back where it belongs.
[Browse Our Parts Catalogue] [Call 1-855-248-0777] [Email fixmytub@gmail.co](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4424/6679/33-54372-k__04954.1783192950.PNG?c=2 "Balboa VS510SZ Circuit Board (33-54372-K)
Your hot tub stopped working — and tracking down the right replacement circuit board shouldn't make things worse. At Western Tub and Pool, we stock recycled Balboa VS510SZ Circuit Boards (part number 33-54372-K) so you can get your spa up and running again without the wait or the premium price tag.
Shop and order at Western Tub and Pool — your trusted source for hard-to-find hot tub spa replacement parts.
Call us: 1-855-248-0777
[Shop Now] [Email Us for Help]
What Is the Balboa VS510SZ Circuit Board (33-54372-K)?
The Balboa VS510SZ Circuit Board (OEM part number 54372-03, cross-reference 33-54372-K) is the printed circuit board (PCB) at the heart of the Balboa VS510SZ spa control system. It manages your hot tub's pumps, heater, blower, circulation pump, ozonator, and lighting — all from one central board.
This is a recycled replacement board sourced and sold by Western Tub and Pool. It delivers the same core functionality as your original board and is compatible with a wide range of spa brands and models.
Key Features & Technical Specifications
What This Board Controls
Pump 1: Dual speed (2-speed primary pump) — 12A max
Pump 2: Single speed (1-speed secondary pump) — 12A max
Blower/Pump 3: Single speed — 12A max
Circulation Pump: Supported (required flow rate: 25 GPM) — 4A max
Ozonator/UVC: Supported — 1A max
Lighting: Supported — 1A max
Heater Output: 23A max
Electrical Input
Single Phase, 120/240VAC, 60Hz
Compatible Topside Keypads
Digital Duplex and Lite Duplex topside control keypads
Compatible keypad models: VL700S, VL701S, VL702S, 53811, 53189, 54652
Compatible with M7 Sensors
Yes — this board supports Balboa M7 sensor technology
Board Dimensions
Approximately 11 inches x 11 inches x 5 inches
Associated Chip Numbers
This board is associated with the following chip numbers:
VS510SZR2D, VS510SZR2C, VS510SZR2B, VS510SZR2A, VS510SZR2, VS510SZR1A, VS510SR2B, VS510SR1B, VS510SR1A, HS200VSR2B, HS200VSR2A, KEYS211DR1B, KEYS211DR1A, KEYS2110R1A, NW300R1A
Cross-Reference Part Numbers
Not sure if this is the right board? This circuit board replaces a wide range of discontinued and OEM part numbers, including:
54372-01, 54372-02, 54372-03, 54371-01, 54371HC1, 54218-Z, 54345, 54344, 54757, 54376, 54559, 55098-01, 55099-01, 55196, 55197, 56658, 53753, 53752, 53533, 53534, KEYS211D, K211D4K, 3-60-0079, 055036, 33-0033, 33-0033-K, 59-138-1684, 59-355-1684, HS200VSR2C, HS200M7, HS200VSR2B, KEYS211DR1B, VS510SR2B, GVS500SZ, G1154, 10-175-2002
Note: If you are replacing a board in a Viking Spa or similar brand, ensure your pumps are rated no more than 230V / 12A before installing this board.
Hot Tub Brands & Models That Use This Circuit Board
The Balboa VS510SZ circuit board is found in a wide range of hot tub brands. If your spa uses a Balboa VS510SZ control system, this board is the replacement you need. Compatible brands include:
Keys Backyard spas
Icon spas
Weslo spas
Hydro Spas
Viking Spas (ensure pumps are rated no more than 230V / 12A)
HydroQuip branded spa systems
Any hot tub running the Balboa VS510SZ Value Series control system
Not sure if your hot tub is on the list? Check the model ID label on top of your spa's control system. If it reads VS510SZ, this is your board. You can also call us directly at 1-855-248-0777 or email us at fixmytub@gmail.com and we'll help you confirm compatibility.
Frequently Asked Questions
How do I know this is the right circuit board for my spa?
The most reliable way to confirm compatibility is to locate the Model ID Label on top of your hot tub's control system enclosure. If it reads \"VS510SZ,\" this board is a match. You can also cross-reference your existing board's part number or chip number against the lists above. Still unsure? Send us a photo of your board and control box — we'll identify it for you.
What is the condition of this circuit board?
This is a new circuit board sold by Western Tub and Pool. If you have questions about the condition of a specific board in our inventory, please contact us before ordering.
Does this board come pre-configured?
Configuration requirements vary depending on your spa's pump voltages, blower setup, and ozonator. DIP switches on the board may need to be set to match your system. If you need guidance, call us at 1-855-248-0777 — our team is here to help walk you through it.
What if my pumps are wired differently from the original board?
When installing any replacement VS510SZ board, make sure to match the white power wires from your original board. On some models, DIP switches will also need to be adjusted to enable features like the circulation pump, amperage limits, or pump speeds. If you run into trouble, send us photos and we'll assist.
Can this board replace my Viking Spa circuit board?
Yes — with one important note. If you are installing this board in a Viking Spa or similar brand, your pumps must be rated no more than 230V / 12A. Installing this board with higher-rated pumps may cause damage.
What if I don't know my part number?
No problem. Send us an email at fixmytub@gmail.com with the following and we'll do the research for you:
Photos of your existing circuit board (front and back)
Your hot tub's make and model
Your hot tub's serial number
Do you carry other Balboa circuit boards or spa parts?
Yes. Western Tub and Pool carries a wide range of recycled hot tub and spa replacement parts. Check our online catalogue or call us at 1-855-248-0777 to find the part you need.
Can't Find Your Part? We Can Help.
Hard-to-find spa parts are our specialty. If you're not sure what you need, don't guess — reach out and let us help you get it right the first time.
Email:fixmytub@gmail.com
Phone: 1-855-248-0777
Send us your part number if you have it, or email us photos of your circuit board along with your hot tub's make, model, and serial number. Our team will identify the correct replacement and confirm availability.
Shop and order at Western Tub and Pool — and get your hot tub back where it belongs.
[Browse Our Parts Catalogue] [Call 1-855-248-0777] [Email fixmytub@gmail.co")