🛠️ Balboa BP8 Main PCB Board (G1381) – Aftermarket Replacement for BP Spa Systems

Get your hot tub back to peak performance with this genuine Balboa aftermarket replacement board.

📋 Product Overview

The Balboa BP8 Main PCB Board (G1381) is a genuine aftermarket replacement circuit board manufactured by Balboa Water Group specifically for spa service and repair. This versatile PCB combines the functionality of the BP6013G3 platform with equipment setups from the BP6013G1, making it an ideal universal replacement for a wide range of Balboa BP series spa control systems.

Designed for aftermarket use, this board delivers comprehensive spa control including support for up to three pumps, circulation pump, blower, ozone generator, and lighting. The BP8 is fully compatible with Balboa’s latest accessories including WiFi connectivity, Clim8zone heat pump integration, CHROMAZON3 lighting, and the complete range of spaTouch and TP series topside control panels.

Whether you’re a spa technician replacing a faulty board or upgrading an older BP system, the G1381 PCB offers proven Balboa reliability with modern feature support.

✨ Key Features

✅ 230VAC 50/60Hz Operation – Automatic frequency detection for UK and European electrical systems

✅ 3kW Heater Control – Supports heaters up to 3.0kW @ 240VAC with built-in dry-fire protection

✅ Triple Pump Support – Controls up to three pumps: Pump 1 (2-speed, 12A), Pump 2 (1-speed, 12A), Pump 3 (1-speed, 12A)

✅ Dedicated Circulation Pump – 2A output for programmable filtration with polling

✅ 18 Configurable Setups – Versatile DIP switch programming for virtually any spa configuration

✅ Clim8zone Heat Pump Ready – Direct data cable connection to Balboa Clim8zone and Clim8zone II heat pumps

✅ WiFi Ready – Compatible with Balboa WiFi transceiver modules for smartphone control

✅ spaTouch Compatible – Works with spaTouch 2, spaTouch 3, Icon spaTouch, and Menued spaTouch panels

✅ TP Series Panel Support – Compatible with TP900, TP800, TP700/TP740, TP600, TP500, TP400, and TP200 panels

✅ CHROMAZON3 Support – Integrated control for Balboa CHROMAZON3 LED lighting systems

✅ Bluetooth Audio Ready – Supports bba2 and bba3 (Balboa Bluetooth Amp) integration

✅ Factory Pre-Configured – Ships in Setup 1, easily adjustable via DIP switches

🔧 Technical Specifications

Specification	Value
Part Number (PCB)	G1381
System Part Number	G3381
Heater Type	825 Incoloy, 3.0kW
CE System Model	BP21-BP8-RCA3.0K
Software Version	65.0
Configuration Signature	A721F573
Input Voltage	230VAC
Frequency	50/60Hz (Auto-detect)
Single-Phase Service	230VAC, 50/60Hz, 1φ, 16A or 32A
Single-Phase Circuit Breaker	20A max (16A service) / 40A max (32A service)
Three-Phase Service	230VAC line-to-neutral, 50/60Hz, 3φ, 16A
Three-Phase Circuit Breaker	20A max per phase
Heater Output	3.0kW @ 240VAC max
Pump 1	230VAC, 2-Speed (or 1-Speed), 12A max
Pump 2	230VAC, 1-Speed, 12A max
Pump 3	230VAC, 1-Speed, 12A max
Circulation Pump	230VAC, 1-Speed, 2A max
Blower	230VAC, 1-Speed, 4A max
Ozone	230VAC, 0.5A max
Spa Light	10VAC, 2A max (shared with CHROMAZON3)
Light Timer	240 minutes
Pump Timer	15 minutes (30 min for P1 Low in non-circ setups)
Blower Timer	15 minutes
AV + Clim8zone Output	230VAC, 2A + 8A max
Setup Configurations	18 programmable setups
Default Setup	Setup 1
Factory Temperature Scale	°C
Hi-Range Temperature	80°F – 104°F (27°C – 40°C)
Freeze Threshold	44°F (7°C)
Expander Board	59097

🔗 Compatibility Guide

Compatible Topside Control Panels

Panel	Version Required	Notes
spaTouch 3	Any version	Version 3.2+ for Clim8zone support
spaTouch 2	Any version	Version 2.19+ for CHROMAZON3; Version 2.36+ for Clim8zone
Icon spaTouch	Any version	Version 3.36+ for bba2 full integration
Menued spaTouch	Any version	Version 2.8+ for bba2 integration
TP900	Version 3.1+	Version 3.13+ for bba; Not supported in Setups 10-18
TP800	Version 3.1+	Version 3.13+ for bba; Version 4.11+ for bba2
TP700/TP740	Any version	—
TP600	Version 2.7+	Version 2.12+ for bba/bba2 On/Off via menu
TP500	Any version	Limited to setups with max one additional device besides Pump 1
TP400T CE	Version 2.7+	TP400T US should NOT be used; Not supported in Setups 1-9
TP400W CE	Version 2.7+	TP400W US should NOT be used
TP200T	Any version	Not supported in Setups 1-9
TP200W	Any version	For setups with only one pump (no Blower or Pump 2)

⚠️ Important: US versions of TP400T and TP400W should NOT be used with this CE system.

Compatible Spa Packs / Systems

System	Compatibility
BP8 (G3381)	✅ Direct replacement
BP6013G1	✅ Compatible (uses BP6013G1 setups)
BP6013G3	✅ Compatible (based on BP6013G3 platform)

Compatible Accessories

Accessory	Compatibility
Balboa WiFi Transceiver	✅ Supported
Clim8zone Heat Pump	✅ Supported (requires panel version for full features)
Clim8zone II Heat Pump	✅ Supported
CHROMAZON3 LED Lighting	✅ Supported (2A max shared with spa light)
bba2 Bluetooth Amp	✅ Supported
bba3 Bluetooth Amp	✅ Supported
IR Receiver	✅ Supported

🎛️ Board Functions & Controls

Pump Control

Output	Function	Rating	Timer
Pump 1	Main jet pump	2-Speed (1-Speed in setups 4-6, 11, 13, 15), 12A max	15 min (30 min P1 Low non-circ)
Pump 2	Secondary jets	1-Speed, 12A max	15 minutes
Pump 3	Additional jets	1-Speed, 12A max	15 minutes
Circ Pump	Heater pump in setups 1-6, 10-15	1-Speed, 2A max	Programmable filtration

💡 Note: Pump 1 is the heater pump in Setups 7-9 and 16-18. Circ Pump is the heater pump in Setups 1-6 and 10-15. Heater pump must deliver minimum 20 GPM through heater.

Heater Control

Feature	Specification
Maximum Output	3.0kW @ 240VAC
Hi-Range Temperature	80°F – 104°F
Lo-Range Temperature	50°F – 99°F
Default Temperature	100°F (Hi-Range) / 70°F (Lo-Range)
Freeze Threshold	44°F
Cooldown (Electric)	1 minute
Cooldown (Gas)	5 minutes
Heater Disable	J29 jumper connection

Additional Controls

Function	Specification
Lighting	10VAC, 2A max, 240-minute timer
CHROMAZON3	Shares 2A limit with spa light
Ozone	230VAC, 0.5A max (slaved to circ in setups 1-6, 10-15)
Blower	230VAC, 4A max, 15-minute timer
AV + Clim8zone	230VAC, 2A + 8A max, always on

Setup Configuration Reference

Setup	Circ Pump	Pump 1	Pump 2	Pump 3	Blower
1	Filters + Polling	2-Speed	1-Speed	1-Speed	1-Speed
2	Filters + Polling	2-Speed	1-Speed	1-Speed	None
3	Filters + Polling	2-Speed	1-Speed	None	1-Speed
4	Filters + Polling	1-Speed	1-Speed	1-Speed	1-Speed
5	Filters + Polling	1-Speed	1-Speed	1-Speed	None
6	Filters + Polling	1-Speed	1-Speed	None	1-Speed
7	None	2-Speed	1-Speed	1-Speed	1-Speed
8	None	2-Speed	1-Speed	1-Speed	None
9	None	2-Speed	1-Speed	None	1-Speed
10	Filters + Polling	2-Speed	1-Speed	None	None
11	Filters + Polling	1-Speed	1-Speed	None	None
12	Filters + Polling	2-Speed	None	None	1-Speed
13	Filters + Polling	1-Speed	None	None	1-Speed
14	Filters + Polling	2-Speed	None	None	None
15	Filters + Polling	1-Speed	None	None	None
16	None	2-Speed	1-Speed	None	None
17	None	2-Speed	None	None	1-Speed
18	None	2-Speed	None	None	None

💡 Note: System ships in Setup 1. DIP switch A5 is ON by default in 1x32A service for Setups 1-9 (limits to 2 high-speed pumps simultaneously when running 3 pumps of 12A max each).

⚙️ DIP Switch Configuration

Switch Bank S1 Functions (1x32A & 1x16A Service)

Switch	OFF Position	ON Position
A1	Normal operation	Test Mode (Service technician only)
A2	No additional pumps with heater	Add 1 high-speed pump with heater
A3	No additional pumps with heater	Add 2 high-speed pumps with heater
A4	No additional pumps with heater	Add 4 high-speed pumps with heater
A5	Special Amperage Rule A	Special Amperage Rule B
A6	Store settings	Memory reset (during power-up only)
A7	1-minute heater cooldown (electric)	5-minute heater cooldown (gas)
A8-A10	Not assigned	Not assigned

⚠️ Switch A6 should be set to OFF upon final installation.

Special Amperage Rules

Rule	Setups 1-9	Setups 10-18
Rule A (A5 OFF)	No limitation	No limitation
Rule B (A5 ON)	2 high-speed pumps maximum	1 high-speed pump maximum; blower turns off with 1 HS pump

🔩 Fuse Specifications

Fuse	Rating	Location	Function
F2	10A	Main board	—
F3	0.125A Slo-Blo	Main board	Transformer input
F4	2A Slo-Blo	Main board	Spa light
F5	3.15A Slo-Blo	Main board	—
F6	30A	Main board	Pump outputs
F7	10A	Main board	—
F8	30A	Main board	Pump outputs
F1	30A	Expander board	Pump 3 + Blower

🛠️ Installation Requirements

⚠️ IMPORTANT: All electrical installation must be carried out by a qualified electrician in accordance with BS 7671 (IET Wiring Regulations) and local codes.

Pre-Installation Checklist

• [ ] Verify board part number G1381 matches your replacement requirements
• [ ] Disconnect all power at main breaker and RCD
• [ ] Photograph existing wiring connections before removal
• [ ] Allow capacitors to discharge (wait minimum 5 minutes)
• [ ] Note current setup number from existing board

Electrical Requirements

Requirement	Specification
Supply Voltage	230VAC
Frequency	50Hz or 60Hz (auto-detect)
Single-Phase (16A)	Circuit breaker 20A max
Single-Phase (32A)	Circuit breaker 40A max
Three-Phase (16A/phase)	Circuit breaker 20A max per phase
Neutral Wire	Required (line-to-neutral must be 230VAC)
Conductor Rating	Minimum 90°C rated, sized for 60°C ampacity
Terminal Torque	27-30 in. lbs (31.1-34.5 kg·cm) for TB1
Conductor Material	Copper only
RCD Protection	Required

Key Connection Points

Connector	Function
TB1	Main power input terminal block
J9	Pump 1 (2-speed or 1-speed)
J14	Pump 2 (1-speed)
J15	Spa Light (10VAC)
J21	Circulation Pump
J32	Ozone Generator
J33	AV + Clim8zone (optional splitter PN 22934)
J34/J35	Main Topside Panel
J40	IR Receiver / CHROMAZON3
J5	Auxiliary Panels (Bank 1)
J29	Heater Disable Switch
J24	Heater Voltage Selection (230V/115V)
J31	Heater Power Selection (2kW/3kW)

Jumper Settings

Jumper	Setting
J24	Centre two pins for 230V heater operation
J31	One pin for ≤2.0kW heater; Two pins for ≥3.0kW heater
J29	Heater disable input (shorted = heater disabled)

⚠️ Safety Warnings

Electrical Safety

⚠️ DANGER: Risk of Electric Shock! ALWAYS disconnect power at the main breaker before any work.

⚠️ All electrical work must be performed by a qualified electrician conforming to all local codes.

⚠️ Service must include a neutral wire with line-to-neutral voltage of 230VAC.

⚠️ Three-phase service measured line-to-line reads approximately 400V – BP systems do not use line-to-line voltage.

⚠️ Use copper conductors only.

⚠️ Disconnect slip terminal with green wires from J6 prior to performing HiPot test.

Test Mode Warning

⚠️ DANGER: HIGH VOLTAGE WILL BE ACCESSIBLE IN TEST MODE! Service technician only.

Post-Installation

⚠️ Test RCD before each use of the spa.

⚠️ Verify all fuses are correct rating before power-up.

⚠️ Check for error messages on initial startup.

⚠️ Water temperature in excess of 38°C may be injurious to health.

📦 Package Contents

Item	Included
Main PCB Board (G1381)	✅ Yes
Control Box Housing	❌ Not included
Heater Assembly	❌ Not included
Wiring Harness	❌ Not included
Expander Board	❌ Not included (order separately: 59097)
Topside Panel	❌ Not included

🔄 Replacement Parts Reference

Component	Part Number
Main PCBA	G1381
Expander PCBA	59097
Plug + Click Heater Kit (3.0kW 825 Inc)	58107R16
Temp Sensor Kit	53605
Fused Adapter (Blower)	25681
Splitter Cable	25859
Splitter for AV + Clim8zone	22934

---

❓ Frequently Asked Questions

Q: What systems is this board compatible with? A: The G1381 PCB is designed for BP8 systems and is also compatible with BP6013G1 and BP6013G3 spa packs. It combines the BP6013G3 platform with BP6013G1 equipment setups.

Q: Is this an OEM Balboa board? A: Yes. This is a genuine Balboa Water Group aftermarket replacement board (Part Number G1381) manufactured specifically for spa service and repair.

Q: Do I need a qualified electrician to install this? A: Yes. UK regulations require all hot tub electrical work be carried out by a qualified electrician. Installation must conform to BS 7671 and all local codes.

Q: Will my existing topside panel work? A: This board supports spaTouch 2, spaTouch 3, Icon spaTouch, TP900, TP800, TP700/TP740, TP600, TP500, TP400 CE, and TP200 series panels. Check the version requirements in the compatibility table. US versions of TP400 should NOT be used.

Q: Does this board support WiFi control? A: Yes. The BP8 PCB is compatible with Balboa WiFi transceiver modules for smartphone control.

Q: Can I connect a Clim8zone heat pump? A: Yes. The BP8 supports direct data cable connection to Clim8zone and Clim8zone II heat pumps. Use splitter PN 22934 if connecting both Clim8zone and another device to J33.

Q: What setup should I configure? A: The board ships in Setup 1. Match the setup number to your existing system configuration. Refer to the setup reference table to select the correct setup for your pump and blower configuration.

Q: What’s included in the package? A: PCB board only. Housing, heater, wiring, expander board, and topside panel are not included.

Q: What warranty is included? A: Contact Parts4Tubs directly for current warranty terms and conditions.

📥 Downloads & Resources

📄 BP8 Tech Sheet (G3381) – Complete wiring diagrams, setup configurations, and panel compatibility

🏆 Why Choose the Balboa BP8 PCB (G1381)

✅ Genuine Balboa Quality – Manufactured by Balboa Water Group, the global leader in spa electronics

✅ Universal Aftermarket Replacement – Combines BP6013G3 platform with BP6013G1 setups for broad compatibility

✅ Modern Feature Support – WiFi, Clim8zone heat pumps, CHROMAZON3 lighting, and Bluetooth audio ready

✅ 18 Setup Configurations – Flexible programming for virtually any pump and accessory combination

✅ Comprehensive Panel Support – Compatible with the complete range of spaTouch and TP series panels

✅ Future-Ready Technology – Software version 65.0 with latest Balboa features

✅ Cost-Effective Repair – Replace faulty boards without purchasing entire spa pack

✅ Detailed Documentation – Full tech sheet with wiring diagrams and setup instructions

🤝 Why Buy from Parts4Tubs

✅ UK-Based Company – Local support from spa industry experts

✅ Fast UK Delivery – Get your spa back up and running quickly

✅ Expert Technical Advice – Our team understands Balboa systems

✅ Competitive Pricing – Quality genuine parts at fair prices

✅ Genuine Balboa Parts – Authorised components, not inferior copies

✅ Full Warranty Support – Peace of mind with your purchase

✅ Complete Solutions – Compatible pumps, heaters, sensors, and panels available

⚡ Summary

The Balboa BP8 Main PCB Board (G1381) is a genuine aftermarket replacement from Balboa Water Group, combining the BP6013G3 platform with BP6013G1 equipment setups for universal compatibility. Supporting up to three pumps, 3kW heater, circulation pump, blower, and modern accessories including WiFi, Clim8zone heat pumps, and CHROMAZON3 lighting, this board delivers comprehensive spa control with 18 configurable setups. Compatible with the full range of spaTouch and TP series panels, the G1381 is the professional choice for BP spa system repair and upgrade.

Order now and restore full functionality to your Balboa spa system.