Product Description

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
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