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![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/1280x1280/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 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/100x100/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.")
Product Description
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 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 VS504SZ Circuit Board 33-54638-K — Genuine Replacement Part
Your hot tub deserves a genuine fix. The Balboa VS504SZ Circuit Board (Part # 33-54638-K / 54638-01) is the exact replacement board for VS504SZ spa control systems — designed to restore full functionality quickly and reliably.
Shop and order at Western Tub and Pool, or call us at 1-855-248-0777 for expert assistance.
[Shop Now] [Call Us: 1-855-248-0777]
Product Overview
The Balboa VS504SZ Circuit Board is a factory-replacement printed circuit board (PCB) manufactured by Balboa Water Group — one of the most trusted names in spa control technology. Whether your existing board has failed, shorted, or simply worn out, this is the part that gets your hot tub back up and running.
Part Numbers & Identifiers:
SKU: 54638
MPN: 54638-01
Model: VS504SZ
UPC: 605380994309
Manufacturer: Balboa Water Group
Warranty: 1 year (with manufacturer)
Chip Number: VS504SZR1B
Specifications & Dimensions
Specification
Details
Control — Pump 1
2-Speed
Control — Pump 2
1-Speed
Additional Controls
Ozone, A/V
Cable Type
Phone Style
Length
13 inches
Width
7.4 inches
Height
3.25 inches
Weight
Approx. 2.5 lbs
Compatible Topside Panels
This circuit board is compatible with the following Balboa topside control panels:
VL700S Topside Panel (with correct 6-button layout)
VL701S Topside Panel (with correct 6-button layout)
VX20 Auxiliary Topside Panel
VX40S Auxiliary Topside Panel
Hot Tub Models & Systems That Use This Board
This circuit board serves as a compatible replacement for the following part numbers and control systems:
Direct Replacement / Compatible Part Numbers:
55372
55370-01 (Control System)
54637-01 (System model VSP-VS504SZ-DCAH)
55636 (CS504SZ System)
55637 (CS504SZER1X)
55257
55174
55173-01
33-0612-08CB (Artesian)
33-54638-K
56532
G1153
OP33-0612-08CB (Artesian)
Coleman Hot Tub Models:
107-961 / 107961
107-068 / 107068
Also Replaces:
VS514SZR1A
MVS504SZ
Alternate Part Numbers:
55637 (Balboa)
OP33-0612-08CB (Artesian)
107-961 (Coleman)
3-60-6033
Why Buy From Western Tub and Pool?
Finding the right circuit board for your spa can be frustrating. At Western Tub and Pool, we specialize in hard-to-find hot tub replacement parts and have helped thousands of spa owners get their systems back online.
Expert Guidance
Not sure if this is the right board for your tub? Our team can help you confirm compatibility before you order. Just call us at 1-855-248-0777 or email fixmytub@gmail.com with your make, model, serial number, and part number (or a photo of your existing board).
Genuine Parts
We carry genuine Balboa Water Group components — not cheap knock-offs. Every board is backed by the manufacturer's 1-year limited warranty.
Fast Shipping
Parts ship quickly so your hot tub downtime is kept to a minimum.
[Shop and Order at Western Tub and Pool]
Important Installation Notes
Circuit boards are not plug-and-play. Before installing, please note the following:
Correct component voltage setup is required — component wires on the board may need to be moved
DIP switches must be configured correctly for your system
Some configuration on the topside panel may also be required
Always reference the wiring schematics on the back of the spa pack cover
Do not select a board based on appearance — many boards look nearly identical but contain different software or chips
Electrical or physical damage resulting from improper installation voids the manufacturer's warranty
If you are unsure about any step of the installation process, we strongly recommend engaging a qualified spa technician.
Frequently Asked Questions
How do I know if this is the right circuit board for my hot tub?
The most reliable way to confirm compatibility is to match the Model Number from your spa control system's ID label — typically found on the top of the control box. You can also check the part numbers listed above or contact our team directly.
Can I send in photos to confirm the right part?
Absolutely. Email us at fixmytub@gmail.com with photos of your existing board, your hot tub's make and model, and the serial number. Our team will confirm whether this is the right replacement before you order.
Does this board come pre-configured?
Configuration options may be available depending on where you order. Contact us at 1-855-248-0777 to discuss your specific electrical setup, including your service voltage, pump configurations, and ozonator circuit requirements.
Can I return a circuit board if I order the wrong one?
Circuit boards are non-returnable electrical items, as they cannot be resold once handled. That's why we strongly encourage you to verify your part number or contact us before placing your order.
What warranty does this circuit board come with?
This board is backed by a 1-year limited warranty from Balboa Water Group, covering manufacturer defects. Damage from improper installation or incorrect PCB selection is not covered under warranty.
Does my hot tub need to be serviced by a professional?
If you're comfortable with basic electrical work and spa systems, many owners complete this replacement themselves. However, if you're unsure about voltage configurations or wiring, professional installation is always recommended.
Can't Find Your Part? We Can Help.
Not every hot tub part is easy to track down. If you're dealing with an older spa, an unusual model, or a board that's been discontinued, Western Tub and Pool specializes in sourcing hard-to-find replacement parts.
Here's how to get help fast:
Call us at 1-855-248-0777 during business hours
Email us at fixmytub@gmail.com with your part number, make, model, and serial number
Send photos of your existing board or control system — we'll identify it for you
Get Your Hot Tub Running Again — Shop at Western Tub and Pool
Don't let a faulty circuit board keep your spa out of commission. The Balboa VS504SZ Circuit Board (33-54638-K) is in stock and ready to ship.
Shop and order at Western Tub and Pool.
[Order Now] [Call 1-855-248-0777] [Email fixmytub@gmail.com]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4419/6672/33-54638-k__73999.1781993432.PNG?c=2 "Balboa VS504SZ Circuit Board 33-54638-K — Genuine Replacement Part
Your hot tub deserves a genuine fix. The Balboa VS504SZ Circuit Board (Part # 33-54638-K / 54638-01) is the exact replacement board for VS504SZ spa control systems — designed to restore full functionality quickly and reliably.
Shop and order at Western Tub and Pool, or call us at 1-855-248-0777 for expert assistance.
[Shop Now] [Call Us: 1-855-248-0777]
Product Overview
The Balboa VS504SZ Circuit Board is a factory-replacement printed circuit board (PCB) manufactured by Balboa Water Group — one of the most trusted names in spa control technology. Whether your existing board has failed, shorted, or simply worn out, this is the part that gets your hot tub back up and running.
Part Numbers & Identifiers:
SKU: 54638
MPN: 54638-01
Model: VS504SZ
UPC: 605380994309
Manufacturer: Balboa Water Group
Warranty: 1 year (with manufacturer)
Chip Number: VS504SZR1B
Specifications & Dimensions
Specification
Details
Control — Pump 1
2-Speed
Control — Pump 2
1-Speed
Additional Controls
Ozone, A/V
Cable Type
Phone Style
Length
13 inches
Width
7.4 inches
Height
3.25 inches
Weight
Approx. 2.5 lbs
Compatible Topside Panels
This circuit board is compatible with the following Balboa topside control panels:
VL700S Topside Panel (with correct 6-button layout)
VL701S Topside Panel (with correct 6-button layout)
VX20 Auxiliary Topside Panel
VX40S Auxiliary Topside Panel
Hot Tub Models & Systems That Use This Board
This circuit board serves as a compatible replacement for the following part numbers and control systems:
Direct Replacement / Compatible Part Numbers:
55372
55370-01 (Control System)
54637-01 (System model VSP-VS504SZ-DCAH)
55636 (CS504SZ System)
55637 (CS504SZER1X)
55257
55174
55173-01
33-0612-08CB (Artesian)
33-54638-K
56532
G1153
OP33-0612-08CB (Artesian)
Coleman Hot Tub Models:
107-961 / 107961
107-068 / 107068
Also Replaces:
VS514SZR1A
MVS504SZ
Alternate Part Numbers:
55637 (Balboa)
OP33-0612-08CB (Artesian)
107-961 (Coleman)
3-60-6033
Why Buy From Western Tub and Pool?
Finding the right circuit board for your spa can be frustrating. At Western Tub and Pool, we specialize in hard-to-find hot tub replacement parts and have helped thousands of spa owners get their systems back online.
Expert Guidance
Not sure if this is the right board for your tub? Our team can help you confirm compatibility before you order. Just call us at 1-855-248-0777 or email fixmytub@gmail.com with your make, model, serial number, and part number (or a photo of your existing board).
Genuine Parts
We carry genuine Balboa Water Group components — not cheap knock-offs. Every board is backed by the manufacturer's 1-year limited warranty.
Fast Shipping
Parts ship quickly so your hot tub downtime is kept to a minimum.
[Shop and Order at Western Tub and Pool]
Important Installation Notes
Circuit boards are not plug-and-play. Before installing, please note the following:
Correct component voltage setup is required — component wires on the board may need to be moved
DIP switches must be configured correctly for your system
Some configuration on the topside panel may also be required
Always reference the wiring schematics on the back of the spa pack cover
Do not select a board based on appearance — many boards look nearly identical but contain different software or chips
Electrical or physical damage resulting from improper installation voids the manufacturer's warranty
If you are unsure about any step of the installation process, we strongly recommend engaging a qualified spa technician.
Frequently Asked Questions
How do I know if this is the right circuit board for my hot tub?
The most reliable way to confirm compatibility is to match the Model Number from your spa control system's ID label — typically found on the top of the control box. You can also check the part numbers listed above or contact our team directly.
Can I send in photos to confirm the right part?
Absolutely. Email us at fixmytub@gmail.com with photos of your existing board, your hot tub's make and model, and the serial number. Our team will confirm whether this is the right replacement before you order.
Does this board come pre-configured?
Configuration options may be available depending on where you order. Contact us at 1-855-248-0777 to discuss your specific electrical setup, including your service voltage, pump configurations, and ozonator circuit requirements.
Can I return a circuit board if I order the wrong one?
Circuit boards are non-returnable electrical items, as they cannot be resold once handled. That's why we strongly encourage you to verify your part number or contact us before placing your order.
What warranty does this circuit board come with?
This board is backed by a 1-year limited warranty from Balboa Water Group, covering manufacturer defects. Damage from improper installation or incorrect PCB selection is not covered under warranty.
Does my hot tub need to be serviced by a professional?
If you're comfortable with basic electrical work and spa systems, many owners complete this replacement themselves. However, if you're unsure about voltage configurations or wiring, professional installation is always recommended.
Can't Find Your Part? We Can Help.
Not every hot tub part is easy to track down. If you're dealing with an older spa, an unusual model, or a board that's been discontinued, Western Tub and Pool specializes in sourcing hard-to-find replacement parts.
Here's how to get help fast:
Call us at 1-855-248-0777 during business hours
Email us at fixmytub@gmail.com with your part number, make, model, and serial number
Send photos of your existing board or control system — we'll identify it for you
Get Your Hot Tub Running Again — Shop at Western Tub and Pool
Don't let a faulty circuit board keep your spa out of commission. The Balboa VS504SZ Circuit Board (33-54638-K) is in stock and ready to ship.
Shop and order at Western Tub and Pool.
[Order Now] [Call 1-855-248-0777] [Email fixmytub@gmail.com]")
![Genuine Balboa BP100UX Circuit Board
Restore your hot tub to perfect working order with the reliable Balboa BP100UX Circuit Board (33-59494-K). Designed for a seamless fit, this replacement part gets you back to relaxing in no time.
[Shop and order at Western tub and pool]
Your ultimate hot tub repair solution
When your hot tub's control system starts acting up, you need a dependable replacement that restores its original logic and performance. The Balboa BP100UX Circuit Board (part number 33-59494-K or G1310) is the industry standard for dependable, universal repairs.
Seamless integration
This genuine replacement board is engineered to easily replace the entire BP100 series, preserving the intended control logic and communication patterns of your spa system so you can enjoy consistent heating and pump responsiveness.
Dual voltage capability
With dual 120V/240V capability and support for pump and blower expansion, this circuit board adapts perfectly to your specific spa setup, ensuring a safe and powerful hydrotherapy experience.
Compatible controls and hot tub models
The Balboa BP100UX Circuit Board is highly versatile and acts as a universal replacement for multiple iterations of the BP100 control systems.
Replaces the following systems and packs:
BP100
BP100G1
BP100G2
BP100G3
Complete control pack G4311
Compatible topside controls and panels:
This circuit board works seamlessly with a wide range of Balboa TP series control panels, including:
TP200 (including TP200T and TP200W)
TP400
TP500
TP540
TP600
TP700
SpaTouch panels
Product specifications
Part Numbers: 33-59494-K, G1310
Manufacturer: Balboa Water Group
Weight: 2.9 lbs
Voltage: 120V / 240V dual capability
Dimensions: Standard factory-fitted expander mounting size for BP100 control boxes
Frequently asked questions
How do I know if this circuit board is the right fit for my spa?
The best way to confirm compatibility is to check the part number on your existing circuit board. If your current board is a BP100, BP100G1, BP100G2, or BP100G3, the 33-59494-K is the correct universal replacement.
What if I need help finding a specific part?
We specialize in hard to find product part assistance! Send us an email to fixmytub@gmail.com. Check your part number if known, or send us pictures, the make and model of your hot tub, and the serial number so our experts can assist you.
Can I get help over the phone?
Absolutely. If you need more information or assistance with these replacement hot tub repair parts, products, and other spa parts, call us at Western Tub and Pool at 1-855-248-0777.
Get your spa running smoothly again
Don't let a faulty control board keep you out of the water. Find your exact replacement and enjoy expert support today.
[Shop and order at Western tub and pool]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4396/6649/33-5949-k__63632.1780522945.PNG?c=2 "Genuine Balboa BP100UX Circuit Board
Restore your hot tub to perfect working order with the reliable Balboa BP100UX Circuit Board (33-59494-K). Designed for a seamless fit, this replacement part gets you back to relaxing in no time.
[Shop and order at Western tub and pool]
Your ultimate hot tub repair solution
When your hot tub's control system starts acting up, you need a dependable replacement that restores its original logic and performance. The Balboa BP100UX Circuit Board (part number 33-59494-K or G1310) is the industry standard for dependable, universal repairs.
Seamless integration
This genuine replacement board is engineered to easily replace the entire BP100 series, preserving the intended control logic and communication patterns of your spa system so you can enjoy consistent heating and pump responsiveness.
Dual voltage capability
With dual 120V/240V capability and support for pump and blower expansion, this circuit board adapts perfectly to your specific spa setup, ensuring a safe and powerful hydrotherapy experience.
Compatible controls and hot tub models
The Balboa BP100UX Circuit Board is highly versatile and acts as a universal replacement for multiple iterations of the BP100 control systems.
Replaces the following systems and packs:
BP100
BP100G1
BP100G2
BP100G3
Complete control pack G4311
Compatible topside controls and panels:
This circuit board works seamlessly with a wide range of Balboa TP series control panels, including:
TP200 (including TP200T and TP200W)
TP400
TP500
TP540
TP600
TP700
SpaTouch panels
Product specifications
Part Numbers: 33-59494-K, G1310
Manufacturer: Balboa Water Group
Weight: 2.9 lbs
Voltage: 120V / 240V dual capability
Dimensions: Standard factory-fitted expander mounting size for BP100 control boxes
Frequently asked questions
How do I know if this circuit board is the right fit for my spa?
The best way to confirm compatibility is to check the part number on your existing circuit board. If your current board is a BP100, BP100G1, BP100G2, or BP100G3, the 33-59494-K is the correct universal replacement.
What if I need help finding a specific part?
We specialize in hard to find product part assistance! Send us an email to fixmytub@gmail.com. Check your part number if known, or send us pictures, the make and model of your hot tub, and the serial number so our experts can assist you.
Can I get help over the phone?
Absolutely. If you need more information or assistance with these replacement hot tub repair parts, products, and other spa parts, call us at Western Tub and Pool at 1-855-248-0777.
Get your spa running smoothly again
Don't let a faulty control board keep you out of the water. Find your exact replacement and enjoy expert support today.
[Shop and order at Western tub and pool]")
![Restore Your Spa with the Balboa VS510DZ
Get your hot tub running like new again. The Balboa VS510DZ Circuit Board (33-55105-K) is the ultimate replacement part to ensure your spa operates smoothly and safely. Shop and order at Western tub and pool today.
[Order your replacement board]
Reliable performance for your hot tub
When your hot tub breaks down, you need a replacement part you can trust. The Balboa VS510DZ Circuit Board is designed to bring your spa back to life, offering industry-leading reliability and precise control.
Advanced M7 technology
Equipped with cutting-edge M7 temperature and water flow sensing technology, this circuit board ensures your hot tub maintains the perfect climate without the need for additional external sensors.
Built for the Value Series
As a proud member of the Balboa Value Series family of circuit boards, the 55105 model guarantees premium manufacturing quality, offering long-lasting durability for your backyard oasis.
Expert assistance on standby
Finding the right hot tub parts can be frustrating. That is why our team is always ready to help you navigate our online catalogue. Call us for more information or assistance with these replacement hot tub repair parts and others at 1-855-248-0777.
Product specifications
To ensure this is the right fit for your spa, here are the technical details for the Balboa VS510DZ:
Part Numbers: 33-55105-K, 55105, Base PCBA PN 55105
System Model: VSP-VS510DZ-DCAH
Technology: M7 temperature and flow sensors
Dimensions & Weight: Standard Balboa VS series casing dimensions (approximately 11" x 5"). For exact shipping weights and packaging dimensions, please contact our support team.
Compatible hot tub models and controls
The Balboa VS510DZ Circuit Board 33-55105-K is incredibly versatile and is used in many models across the industry.
Compatible topside controls include:
Balboa VL801D
Select other Balboa Value Series controllers
Commonly used in hot tub models such as:
Sunset Spas (Refresh model)
VJA-Service (Dream 7)
Coast Spas (as a compatible replacement board)
Various other custom and aftermarket spa builds
Check here and our online catalogue or call to verify compatibility with your specific make and model.
Need hard to find product part assistance?
1. Locate your part number
Check your current circuit board for a sticker indicating the part number (look for 55105 or 33-55105-K).
2. Gather your spa details
Note down the make and model of the hot tub, as well as the serial number.
3. Snap a few pictures
Take clear pictures of your current circuit board and topside control panel.
4. Reach out to our team
Send us an email to fixmytub@gmail.com with your details, and our experts will match you with the exact part you need.
Frequently asked questions
How do I know if the Balboa VS510DZ is right for my hot tub?
The best way to confirm compatibility is by matching the part number (55105 or 33-55105-K) on your existing board. If you cannot find the number, email us pictures of your spa setup and we will identify it for you.
What if I cannot find the part I need in your online catalogue?
We specialize in hard to find product part assistance. If you do not see what you are looking for, send us an email at fixmytub@gmail.com or call 1-855-248-0777, and we will source the right part for your tub.
Does this board come with the topside control panel?
No, this listing is for the printed circuit board (PCB) only. However, it is fully compatible with controls like the VL801D.
Get your hot tub back in action
Don't let a faulty circuit board ruin your relaxation time. Shop and order at Western tub and pool to get the right parts, the first time.
[Call 1-855-248-0777 to order]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4420/6673/33-55105-k__83163.1781994166.PNG?c=2 "Restore Your Spa with the Balboa VS510DZ
Get your hot tub running like new again. The Balboa VS510DZ Circuit Board (33-55105-K) is the ultimate replacement part to ensure your spa operates smoothly and safely. Shop and order at Western tub and pool today.
[Order your replacement board]
Reliable performance for your hot tub
When your hot tub breaks down, you need a replacement part you can trust. The Balboa VS510DZ Circuit Board is designed to bring your spa back to life, offering industry-leading reliability and precise control.
Advanced M7 technology
Equipped with cutting-edge M7 temperature and water flow sensing technology, this circuit board ensures your hot tub maintains the perfect climate without the need for additional external sensors.
Built for the Value Series
As a proud member of the Balboa Value Series family of circuit boards, the 55105 model guarantees premium manufacturing quality, offering long-lasting durability for your backyard oasis.
Expert assistance on standby
Finding the right hot tub parts can be frustrating. That is why our team is always ready to help you navigate our online catalogue. Call us for more information or assistance with these replacement hot tub repair parts and others at 1-855-248-0777.
Product specifications
To ensure this is the right fit for your spa, here are the technical details for the Balboa VS510DZ:
Part Numbers: 33-55105-K, 55105, Base PCBA PN 55105
System Model: VSP-VS510DZ-DCAH
Technology: M7 temperature and flow sensors
Dimensions & Weight: Standard Balboa VS series casing dimensions (approximately 11\" x 5\"). For exact shipping weights and packaging dimensions, please contact our support team.
Compatible hot tub models and controls
The Balboa VS510DZ Circuit Board 33-55105-K is incredibly versatile and is used in many models across the industry.
Compatible topside controls include:
Balboa VL801D
Select other Balboa Value Series controllers
Commonly used in hot tub models such as:
Sunset Spas (Refresh model)
VJA-Service (Dream 7)
Coast Spas (as a compatible replacement board)
Various other custom and aftermarket spa builds
Check here and our online catalogue or call to verify compatibility with your specific make and model.
Need hard to find product part assistance?
1. Locate your part number
Check your current circuit board for a sticker indicating the part number (look for 55105 or 33-55105-K).
2. Gather your spa details
Note down the make and model of the hot tub, as well as the serial number.
3. Snap a few pictures
Take clear pictures of your current circuit board and topside control panel.
4. Reach out to our team
Send us an email to fixmytub@gmail.com with your details, and our experts will match you with the exact part you need.
Frequently asked questions
How do I know if the Balboa VS510DZ is right for my hot tub?
The best way to confirm compatibility is by matching the part number (55105 or 33-55105-K) on your existing board. If you cannot find the number, email us pictures of your spa setup and we will identify it for you.
What if I cannot find the part I need in your online catalogue?
We specialize in hard to find product part assistance. If you do not see what you are looking for, send us an email at fixmytub@gmail.com or call 1-855-248-0777, and we will source the right part for your tub.
Does this board come with the topside control panel?
No, this listing is for the printed circuit board (PCB) only. However, it is fully compatible with controls like the VL801D.
Get your hot tub back in action
Don't let a faulty circuit board ruin your relaxation time. Shop and order at Western tub and pool to get the right parts, the first time.
[Call 1-855-248-0777 to order]")
![Get Your Spa Running with the Balboa BP7 Board
Don't let a faulty circuit board ruin your relaxation. Western Tub and Pool provides brand-new, reliable Balboa BP7 Circuit Boards designed to get your hot tub back in perfect working condition. Shop and order at Western tub and pool.
[Call Us to Order: 1-855-248-0777]
Why Choose Our Balboa BP7 Circuit Board?
Brand New and Reliable
We supply only factory-new Balboa BP7 circuit boards, ensuring long-lasting performance and safety for your spa.
Broad Compatibility
The Balboa BP7 board is highly versatile and works seamlessly with a variety of controls and spa setups. Check our online catalogue or call us directly to verify your system's compatibility.
Expert Part Matching
Struggling to find the right part? We offer dedicated assistance to ensure you get exactly what your spa needs without the guesswork.
Compatible Hot Tubs and Models
The Balboa BP7 Circuit Board is used in many top hot tub models and pairs with a wide range of compatible controls. Because hot tub configurations vary greatly, we recommend verifying your exact model before purchasing.
Check your part number if known, or send us pictures, the make and model of the hot tub, and your serial number. Check our online catalogue or call us for a complete list of supported models!
Product Specifications
To ensure a perfect fit inside your hot tub's control box, please note the standard measurements for the Balboa BP7 Circuit Board:
Dimensions: Approximately 11 inches x 5 inches
Weight: Approximately 1.5 lbs
Condition: 100% Brand New
Frequently Asked Questions
How do I know if the Balboa BP7 is the right board for my spa?
The best way to confirm compatibility is to check the part number on your existing circuit board. If you are unsure, send us pictures of your current board, along with the make, model, and serial number of your hot tub.
Do you offer help finding hard-to-find parts?
Absolutely. If you need hard to find product part assistance, send us an email to fixmytub@gmail.com and our experts will track it down for you.
How can I get more information or place an order?
You can call us directly for information or assistance with these replacement hot tub repair parts, products, and other spa parts at Western Tub and Pool at 1-855-248-0777 or email us at fixmytub@gmail.com.
Restore Your Hot Tub Today
Get back to relaxing in warm, soothing water. Contact our team to secure your replacement board.
[Email Us at fixmytub@gmail.com]](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4363/6597/board1__83336.1778519763.PNG?c=2 "Get Your Spa Running with the Balboa BP7 Board
Don't let a faulty circuit board ruin your relaxation. Western Tub and Pool provides brand-new, reliable Balboa BP7 Circuit Boards designed to get your hot tub back in perfect working condition. Shop and order at Western tub and pool.
[Call Us to Order: 1-855-248-0777]
Why Choose Our Balboa BP7 Circuit Board?
Brand New and Reliable
We supply only factory-new Balboa BP7 circuit boards, ensuring long-lasting performance and safety for your spa.
Broad Compatibility
The Balboa BP7 board is highly versatile and works seamlessly with a variety of controls and spa setups. Check our online catalogue or call us directly to verify your system's compatibility.
Expert Part Matching
Struggling to find the right part? We offer dedicated assistance to ensure you get exactly what your spa needs without the guesswork.
Compatible Hot Tubs and Models
The Balboa BP7 Circuit Board is used in many top hot tub models and pairs with a wide range of compatible controls. Because hot tub configurations vary greatly, we recommend verifying your exact model before purchasing.
Check your part number if known, or send us pictures, the make and model of the hot tub, and your serial number. Check our online catalogue or call us for a complete list of supported models!
Product Specifications
To ensure a perfect fit inside your hot tub's control box, please note the standard measurements for the Balboa BP7 Circuit Board:
Dimensions: Approximately 11 inches x 5 inches
Weight: Approximately 1.5 lbs
Condition: 100% Brand New
Frequently Asked Questions
How do I know if the Balboa BP7 is the right board for my spa?
The best way to confirm compatibility is to check the part number on your existing circuit board. If you are unsure, send us pictures of your current board, along with the make, model, and serial number of your hot tub.
Do you offer help finding hard-to-find parts?
Absolutely. If you need hard to find product part assistance, send us an email to fixmytub@gmail.com and our experts will track it down for you.
How can I get more information or place an order?
You can call us directly for information or assistance with these replacement hot tub repair parts, products, and other spa parts at Western Tub and Pool at 1-855-248-0777 or email us at fixmytub@gmail.com.
Restore Your Hot Tub Today
Get back to relaxing in warm, soothing water. Contact our team to secure your replacement board.
[Email Us at fixmytub@gmail.com]")