🔌 Balboa Heat Pump Relay Kit – BP Systems Compatible Heat Pump Integration Module

Compact relay module designed for seamless heat pump integration with Balboa BP control systems, featuring 350mm cable for flexible installation.

📋 Product Overview

The Balboa Relay is designed for use with heat pumps in BP systems, offering reliable performance and seamless integration. This Heat Pump Relay Kit enables your Balboa BP control system to communicate with and control an external heat pump, providing an energy-efficient heating solution for your spa.

With its compact design measuring just 65mm × 40mm × 50mm and a 350mm cable length, this relay offers flexible installation options within your BP control box.

✨ Key Features

✅ 230V / 50Hz Operation – Designed for UK and European electrical systems

✅ BP Systems Compatible – Specifically designed for Balboa BP control systems

✅ Heat Pump Integration – Enables heat pump control from your spa system

✅ 350mm Cable Length – Flexible installation within control box

✅ Ultra-Compact Design – Just 65mm × 40mm × 50mm

✅ Complete Kit – Ready to install

🔧 Technical Specifications

Specification	Value
Brand	Balboa
Product Type	Expander Board / Relay for Heat Pump
Input Voltage	230V
Frequency	50Hz
Length	65 mm
Width	40 mm
Height	50 mm
Cable Length	350 mm

✅ Compatibility Guide

Compatible Control Systems

Control System	Compatibility
Balboa BP series control systems	✅ Compatible
Other Balboa systems (GS, GL, etc.)	❌ NOT Specified

⚠️ IMPORTANT: This relay is specifically designed for Balboa BP systems. Verify your control system is a BP series before ordering.

⚙️ Board Functions

Heat Pump Integration

Function	Description
Primary Function	Relay control for external heat pump
Integration	Seamless connection with BP control systems
Cable	350mm for flexible positioning

How It Works

The Heat Pump Relay Kit connects to your Balboa BP main control board and provides:

• Relay switching for heat pump on/off control
• Integration with spa control system
• Coordinated heating between spa heater and heat pump
• Potential energy savings through heat pump operation

Why Heat Pump Integration?

Heat pumps offer energy-efficient heating for spas, typically using less electricity than traditional electric heaters. This relay enables your BP control system to manage the heat pump alongside other spa functions.

🛠️ Installation Requirements

⚠️ IMPORTANT: Installation should be performed by a qualified electrician or spa technician.

Pre-Installation Checklist

• [ ] Verify you have a Balboa BP series control system
• [ ] Ensure heat pump is compatible with relay control
• [ ] Confirm adequate space in control box for relay (65×40×50mm)
• [ ] Verify 350mm cable length is sufficient for your installation
• [ ] Disconnect all power at the isolator/breaker
• [ ] Photograph existing wiring connections
• Installation Guide Download

Electrical Requirements

Requirement	Specification
Supply Voltage	230V
Frequency	50Hz
Cable Length	350mm (included)
RCD Protection	Required (30mA recommended)
Earth Connection	Mandatory

💡 Tip: The 350mm cable provides flexibility for positioning the relay within the control box. Plan your cable routing before installation.

⚠️ Safety Warnings

Electrical Safety

• ⚠️ ALWAYS disconnect power before any work
• ⚠️ Installation by qualified professional required
• ⚠️ Ensure correct voltage supply (230V, 50Hz)
• ⚠️ Verify RCD protection is installed and functioning
• ⚠️ Never operate spa with covers removed from electrical components

Compatibility Warning

• ⚠️ This relay is specifically designed for Balboa BP systems
• ⚠️ Verify heat pump compatibility before installation
• ⚠️ Ensure heat pump installation meets all relevant regulations
• ⚠️ Heat pump must be installed by qualified personnel

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Balboa BP Systems	✅ Compatible	Designed specifically for BP
♨️ Heat Pump Integration	✅ Ideal	Primary function
♨️ Energy-Efficient Heating	✅ Enables	Via heat pump control
♨️ Other Balboa Systems	⚠️ Not specified	Verify compatibility

This relay kit is designed for:

• Integrating an external heat pump with BP control systems
• Enabling energy-efficient spa heating
• Adding heat pump control to existing BP installations
• Replacing faulty heat pump relay modules

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❓ Frequently Asked Questions

Q: Is this compatible with GS or GL systems? A: This relay is specifically designed for Balboa BP systems. Compatibility with GS or GL systems is not specified on the product page. Contact Parts4Tubs for advice on other systems.

Q: Does this include the heat pump? A: No, this is the relay kit only that enables your BP control system to control an external heat pump. The heat pump must be purchased separately.

Q: What is the cable length? A: The included cable is 350mm in length, providing flexibility for installation within the control box.

Q: How does it differ from pump expander boards? A: This is a heat pump relay for controlling external heat pump equipment, not a pump expander for adding jet pumps. It serves a completely different function.

Q: What size is the relay unit? A: The relay measures 65mm (L) × 40mm (W) × 50mm (H) – one of the most compact Balboa expansion modules available.

🏆 Why Choose the Balboa Heat Pump Relay Kit

• ✅ Official Balboa Product – Designed for BP systems
• ✅ 230V / 50Hz – Designed for UK electrical systems
• ✅ Ultra-Compact – Just 65mm × 40mm × 50mm
• ✅ 350mm Cable – Flexible installation options
• ✅ Heat Pump Integration – Enable energy-efficient heating
• ✅ Seamless Integration – Works with BP control system
• ✅ Complete Kit – Everything needed for installation

🤝 Why Buy From Parts4Tubs

• ✅ UK-based company with local support
• ✅ Fast UK delivery
• ✅ Expert technical advice from spa specialists
• ✅ Competitive pricing
• ✅ Full warranty support
• ✅ Easy returns within 30 days (unfitted items)
• ✅ Compatible parts and accessories available
• ✅ Help with heat pump integration questions

✨ Summary

The Balboa Heat Pump Relay Kit is a compact relay module designed specifically for heat pump integration with Balboa BP control systems. Operating at 230V / 50Hz, this ultra-compact unit measures just 65mm × 40mm × 50mm and includes a 350mm cable for flexible installation within your control box. This relay enables your BP system to control an external heat pump for energy-efficient spa heating. Important: This relay is specifically designed for Balboa BP systems. Installation should be performed by a qualified professional. The kit includes one complete relay unit ready for installation.

Finding and identifying a replacement Hot Tub Circuit Board (PCB)

If you are looking to replace a failed PCB on your Hot Tub’s spa pack, then quite often identifying the part that you need can be the hardest thing.

Firstly, you are looking for a model number on the actual circuit board itself. Having the model or serial of your hot tub is not going to help at this point, you need to find the number on the PCB itself.

Now, with certain brands of PCB, the number of the replacement PCB that you need is not going to match identically the one you are replacing. Why is that I hear you ask?

Well, normally, it is an updated version. This means that it might have updated firmware on the PCB or be a later revision. Normally, this means that the part number would be slightly different. This is usually indicated with a “12345678 -x” at the end of that part number where x indicated a firmware revision.

In some cases, there will be some following letters on the part number of the circuit board, “12345678 -x MAS” this can indicate that the PCB was used for an OEM meaning it was produced for a certain hot tub manufacturer and the letters identify the manufacturer.

This means if you source an original PCB, it will not have the letters, but will in most cases work just fine.

It can be confusing I know!

What if you can’t find a model number?

If you can’t find a model number on the PCB itself, then you need to look for a model number on the spa pack. Normally, there is a sticker on the outside of the spa pack that tells you the current ratings and input voltages etc and this will have a model number.

In general, most spa packs in the USA are manufactured by Balboa, Hydro-Quip, ACC or Gecko. I know I am generalising here, but if you have a spa pack that has the brand of your hot tub on, it will be an OEM so the key is identifying who made the original box.

From there, you can normally find an original PCB that you will be able to switch out.

For example, the Balboa VS (value series) is a very popular spa pack that has been used by multiple hot tub manufacturers under their own brand names. Whatever they have called it, strip it back and it is still a Balboa VS.

Visual Inspection

One of the most important things you can do when you are looking for a replacement is to visually inspect the PCB that you have versus the picture online of the replacement you are considering. They need to look the same even if there are the differences in firmware revisions or OEM part numbers, you should be visually replacing a PCB that looks like the one you have.

Configuring a replacement Hot Tub Circuit Board (PCB)

When you get a new PCB, you are more than likely going to need to configure it. Most PCBs have a number of different modes and setups that the can operate in. For this, you will need to manual or spec sheet to guide you.

For things like DIP switches, most of the time you can copy the settings from your original circuit board.

You may need to move jumpers or even wires to configure voltages – the key here is that you read the schematic and don’t expect the PCB to just work out of the box – it usually doesn’t.

Troubleshooting a Hot Tub Circuit Board (PCB)

Here are some common things you will see when you replace a PCB on a hot tub.

You press the buttons on the topside control and they don’t control the right parts (pumps or blower etc) – this is a mode configuration thing and you will either need to change some DIP switches on the PCB or an internal or low level programming mode on the topside control. Check the manual for how to do this.

To check this, unplug all of your kit – heater, pumps, blower and then turn on the PCB. If it trips with nothing plugged in, usually the voltage is incorrectly set and what is happening is that live current is being sent to the ground – because you have 4 wires into the PCB rather than 3. Current on the ground loop causes the trip. Check the settings to make sure it is configures for 230V.

It might not trip until you physically turn on a pump or a blower.