🛠️ Balboa BP501G1 Spa Circuit Board — G1351 (56944-01) — Multi-Setup 240V Control System

Professional-grade replacement circuit board for reliable two-pump or circ-pump spa control.

📋 Product Overview

The Balboa BP501G1 spa circuit board (G1351, formerly 56944-01) is a genuine Balboa Water Group OEM PCB designed for the BP501G1 control system platform. This is one of Balboa’s most versatile and widely deployed circuit boards, capable of operating across six software-selectable setup configurations covering two-pump, blower, circulation pump, and single-pump spa arrangements.

The BP501G1 PCB manages up to two pumps, a blower, a circulation pump, spa lighting, an ozone generator, and an auxiliary/audio-video output — all configurable via DIP switches and jumpers to match a broad range of original equipment builds. It is compatible with the full range of Balboa TP-series and spaTouch™ touchscreen topside panels.

This board is a direct replacement for legacy Balboa BP501G1 system boards including part numbers 56488, 56488-02, and 56944-01. It is used across numerous hot tub brands including Cal Spas and Platinum Spas. Ships in factory default Setup #1; setup number, DIP switches, and voltage-select jumpers must be adjusted to match your existing board configuration before installation.

⚠️ Critical Limitation: A circulation pump cannot be used together with a 2-speed Pump 1 on this board. If your spa runs a 2-speed Pump 1 AND a circ pump simultaneously, the BP501G2 is required instead.

🌟 Key Features

✅ Genuine Balboa Water Group OEM PCB — Factory-quality board with chip BP501-X; not an aftermarket substitute
✅ Six Software Setups — Field-selectable configurations cover 2-speed pump, single-speed pump, circ pump, Pump 2, and blower combinations to match diverse original spa builds
✅ Dual-Pump Capability — Controls Pump 1 (2-speed or 1-speed) plus Pump 2 (1-speed) in Setups 1 & 2
✅ Blower Output — Dedicated 240V blower output (4A max) available in Setups 3 & 4
✅ Circulation Pump Support — Built-in circ pump output (2A max) with programmable filtration and polling cycles in Setups 2, 4, and 6
✅ 5.5kW or 4.0kW Heater Compatible — Supports both heater capacities depending on system part number
✅ Ozone Output — 240V ozone output slaved to heater pump (circ or P1 Low) for effective water treatment
✅ Broad Topside Compatibility — Works with Balboa TP200, TP400, TP500, TP600, TP700, TP740, TP800, TP900, and all spaTouch™ panel series
✅ AV / Clim8zone™ Output — Integrated 240V output for audio-video accessories and Clim8zone™ heat pump support (J47)
✅ CHROMAZON3™ Compatible — Supports Balboa’s LED color lighting system (shared 2A light output)
✅ bba™2 / bba™3 Bluetooth Amp Ready — Balboa Bluetooth module compatible via integrated TP700/TP800/TP900/spaTouch™ panels
✅ 1-Year Manufacturer Warranty — Backed by Balboa Water Group
✅ Made in the USA — Balboa Water Group, a Helios Technologies company

🔩 Technical Specifications

Specification	Value
Current Balboa Part Number (MPN)	G1351
Previous Part Number	56944-01
Legacy Part Number	56488 / 56488-02
Main PCBA Part Number	56944-02
Chip Number	BP501-X
Board Model	BP501G1
Connector Type	4-pin Molex
Board Dimensions	11 in × 5 in
System PNs (5.5kW variants)	56485-07 (800 Incoloy), 56486-07 (825 Incoloy), 56487-07 (Titanium)
System PN (4.0kW variant)	56567-06 (800 Incoloy)
UL System Model (5.5kW)	BP501-BP501G1-BU
UL System Model (4.0kW)	BP501-BP501G1-BS
Software Version	V65.0 (M100_201)
Input Voltage (standard)	240VAC / 50/60Hz
Service (standard 240V)	48A, Class A GFCI-protected, 4-wire (Hot, Hot, Neutral, Ground)
Max Breaker (standard 240V)	60A
Input Voltage (Setups 5 & 6 only)	120V or 240VAC / 50/60Hz
Service (120V, wall-mount GFCI)	16A, 20A GFCI/breaker
Service (120V, GFCI cord)	12A max
Max Breaker (120V)	20A
Pump 1 Output	240VAC, 2-Speed (Setups 1,3,5) or 1-Speed (Setups 2,4,6), 12A max
Pump 2 Output	240VAC, 1-Speed, 12A max — Setups 1 & 2
Blower Output	240VAC, 1-Speed, 4A max — Setups 3 & 4
Circ Pump Output	240VAC, 1-Speed, 2A max — Setups 2, 4, 6
Ozone Output	240VAC, 0.5A max
Spa Light Output	10VAC, 2A max (shared with CHROMAZON3™)
AV / Clim8zone™ Output (J47)	240VAC, 2A (AV) + 8A (C8Z) max
Heater Output (5.5kW systems)	5.5kW @ 240VAC
Heater Output (4.0kW systems)	4.0kW @ 240VAC
Heater Output (120V, Setups 5 & 6)	1.25kW @ 120VAC
Number of Software Setups	6
DIP Switches	6-position Switchbank S1
Fuse F3	10A 250V (PN 26904)
Fuse F4	2A 250V (PN 26307)
Fuse F5	30A 250V (PN 30136)
Fuse F6	0.5A 250V (PN 26905)
Fuse F7	2A 250V (PN 26307)
Wire Type	Copper conductors only
Minimum Wire Gauge	#6 AWG, 90°C-rated
TB1 Torque	27–30 in. lbs.
Heater Connection Torque	30–35 in. lbs.
Hi-Range Temp (adjustable)	80°F–104°F (26.7°C–40°C)
Lo-Range Temp (adjustable)	50°F–99°F (10°C–37.2°C)
Freeze Threshold	44°F (6.7°C)
Warranty	1 year (manufacturer)

⚠️ Board ships in factory default Setup #1. Setup number, DIP switches, and voltage-select jumpers must be adjusted to match your original board’s configuration prior to installation.

ℹ️ US Voltage Note: Standard residential 240V/60Hz service. Setups 5 & 6 only support optional 120V operation with appropriate GFCI protection.

✅ Compatibility Guide

Compatible Topside Panels:

Panel Series	Version Required	Notes
spaTouch™ Mini	Any	Any version for Clim8zone™ support (v1.0+)
spaTouch™ 3	Any	v3.2+ for Clim8zone™ support
spaTouch™ 2	Any	v2.19+ for CHROMAZON3™; v2.36+ for Clim8zone™
Icon spaTouch™	Any	v3.36+ for bba™2 fully integrated
Menued spaTouch™	Any	v2.8+ for bba™2 integrated
TP900	v3.1 and later	v3.13+ for bba™
TP800	v3.1 and later	v3.13+ for bba™; v4.11+ for bba™2 integrated
TP700 / TP740	Any	v1.27+ for Clim8zone™ support
TP600	v2.7 and later	v2.12+ for bba™/bba™2 On/Off via menu
TP500	Any	All versions
TP400T US	v2.7 and later	v2.12+ for bba™/bba™2 On/Off via menu
TP400W US	v2.7 and later	v2.12+ for bba™/bba™2 On/Off via menu
TP200T	Any	All versions
TP200W	Any	All versions

Replaces the Following Part Numbers:

Legacy Part Number	Description
56944-01	Balboa BP501G1 PCB (previous version)
56488	Balboa BP501G1 PCB (legacy)
56488-02	Balboa BP501G1 PCB (legacy)
56485-03 through 56485-07	BP501G1 System, 5.5kW 800 Incoloy (various revisions)
56486-03 through 56486-07	BP501G1 System, 5.5kW 825 Incoloy (various revisions)
56487-03 through 56487-07	BP501G1 System, 5.5kW Titanium (various revisions)
56567-01 through 56567-06	BP501G1 System, 4.0kW 800 Incoloy (various revisions)

⚠️ Always verify your existing board’s chip number and part number before ordering. Do not order a circuit board based on appearance — many boards look similar but have different software.

🎛️ Board Functions & Setup Configurations

Software Setup Reference Table:

Setup #	Circ Pump	Pump 1	Pump 2	Blower	Temp Scale
1 (default)	None	2-Speed	1-Speed	None	°F
2	Prog. Filtration + Polling	1-Speed	1-Speed	None	°F
3	None	2-Speed	None	1-Speed	°F
4	Prog. Filtration + Polling	1-Speed	None	1-Speed	°F
5	None	2-Speed	None	None	°F
6	Prog. Filtration + Polling	1-Speed	None	None	°F

⚠️ In Setups 1, 3, and 5 (no circ pump), Pump 1 acts as the heater pump. ⚠️ In Setups 2, 4, and 6 (with circ pump), the circ pump acts as the heater pump.

Pump Outputs:

Output	Connector	Voltage	Max Amps	Timer
Pump 1 (2-speed)	J8	240VAC	12A max	15 min (30 min P1 Low, non-circ)
Pump 2 (1-speed)	J14	240VAC	12A max	15 min
Blower (1-speed)	J14	240VAC	4A max	15 min
Circ Pump	J21	240VAC	2A max	Programmable

Heater Control:

Feature	Specification
Heater Type	Flow-through (Plug+Click connection)
Max Output (5.5kW system)	5.5kW @ 240VAC
Max Output (4.0kW system)	4.0kW @ 240VAC
Max Output (120V, Setups 5 & 6)	1.25kW @ 120VAC
Heater Connector	J46
Hi-Range Set Temp	80°F–104°F
Lo-Range Set Temp	50°F–99°F
Freeze Threshold	44°F (6.7°C) — rotating pump activation
Cooldown (electric heater)	1 minute (DIP Switch 4 OFF)
Cooldown (gas heater)	5 minutes (DIP Switch 4 ON)

Additional Outputs:

Function	Connector	Rating	Notes
Ozone	J24	240VAC, 0.5A max	Slaved to circ pump (circ setups) or P1 Low (non-circ)
Spa Light / CHROMAZON3™	J15	10VAC, 2A max (shared)	240-min timer
AV + Clim8zone™	J47	240VAC, 2A + 8A max	Splitter PN 22934 if two devices needed
Aux Panel Bank 1	J5	—	AX10, AX20, AX40 auxiliary panels

DIP Switch Functions (Switchbank S1):

Switch	OFF Position	ON Position
1	Test Mode OFF (normal)	Test Mode ON — service only
2	No heat with any HS pump/blower	Heat with 1 high-speed pump running
3	See Switch 2	Heat with 2 HS pumps (or 1 HS + blower) running
4	1-min cooldown (electric heater)	5-min cooldown (gas heater)
5	Special Amperage Rule A	Special Amperage Rule B
6	Normal operation	Memory Reset (power-up)

⚠️ Switch 6 must be set to OFF upon final installation.

Key Jumpers:

Jumper	Function
J44	230V config: center 2 pins; 115V config: left + right 2 pins (when neutral wire used)
J29	Heater Disable Switch input; if shorted, heater will not run
J25, J26, J27	Heater type settings — factory configured, do NOT change
J109	GFCI Test/Trip Enable/Disable
J30	Do Not Use

⚙️ Installation Requirements

⚠️ IMPORTANT: Installation must be performed by a licensed electrician in full compliance with NEC (National Electrical Code) and all applicable local codes.

Pre-Installation Checklist:

• [ ] Confirm chip number and part number of existing board before ordering
• [ ] Note your existing software Setup # (written on label inside system lid)
• [ ] Disconnect all power at the GFCI breaker or disconnect box
• [ ] Photograph all wiring, connector positions, DIP switch settings, and jumper positions before removal
• [ ] Allow capacitors to discharge — wait at least 5 minutes after power-off
• [ ] Disconnect J52 slip terminal (green wires) before any HiPot test
• [ ] Note: board ships in Setup #1 — DIP switches, voltage-select jumpers, and setup must be adjusted before power-up

Electrical Requirements (Standard 240V Configuration):

Requirement	Specification
Supply Voltage	240VAC / 60Hz
Service	48A, 4-wire (Hot, Hot, Neutral, Ground)
Circuit Breaker	60A maximum
GFCI Protection	Class A GFCI required — NEC Article 680
Ground & Bonding	Equipment grounding and bonding required — NEC Article 680
Dedicated Circuit	Required
Disconnect Box	Required within line of sight of spa, min. 5 ft from inside spa walls (NEC)
Wire Type	Copper conductors ONLY
Min. Wire Gauge	#6 AWG, 90°C-rated
TB1 Torque	27–30 in. lbs.
Heater Connection Torque	30–35 in. lbs.

Electrical Requirements (120V Option — Setups 5 & 6 Only):

Requirement	Specification
Supply Voltage	120VAC / 60Hz
Service (wall-mount GFCI)	16A, 20A GFCI/breaker
Service (GFCI cord)	12A max
Pump 1, Circ Pump, Ozone	Must be wired to 120VAC — move wires at J50 and J51 to Area 1 (Neutral)
DIP Switches 2 & 3	Must be set to OFF when system is configured for 120VAC
Clim8zone™	Cannot be used in 120VAC configuration

Key Board Connectors:

Connector	Function
TB1	Main power terminal block
J8	Pump 1 (2-speed or 1-speed)
J14	Pump 2 (1-speed) or Blower
J15	Spa Light / CHROMAZON3™ (10V)
J21	Circ Pump
J24	Ozone
J46	Heater (240V, Plug+Click)
J47	AV + Clim8zone™
J50, J51	P1 / Circ / Ozone voltage selection
J5	Aux Panel connection (Bank 1)
J33 / J45	Main topside panel connections
J52	Disconnect before HiPot test
S1	6-position DIP switchbank

💡 Tip: Using a permanent marker, write the Setup number on the label inside the system lid. This is critical information for any future service technician.

Setup Change Procedure (TP600/TP400 Panels):

1. Enter Test Mode: turn DIP Switch 1 ON while system is running
2. During Priming Mode, press any Temperature button once to exit Priming Mode
3. Press: Warm, Light, Warm, Warm, Warm, Warm — continue pressing Warm until desired Setup Number appears
4. Press Light once to confirm — system resets to new Setup
5. Turn DIP Switch 1 OFF to exit Test Mode

Memory Reset Procedure:

• Set DIP Switch 6 to ON at power-up to restore factory settings
• ⚠️ Switch 6 must be returned to OFF upon final installation

🛡️ Safety Warnings

Electrical Safety:

• ⚠️ ALWAYS disconnect all power before performing any board work — high-voltage shock hazard
• ⚠️ Licensed electrician installation required — NEC compliance mandatory
• ⚠️ Class A GFCI protection required per NEC Article 680
• ⚠️ Equipment grounding AND bonding mandatory per NEC Article 680
• ⚠️ Verify supply voltage matches board configuration before connecting
• ⚠️ Use copper conductors only — minimum #6 AWG, 90°C-rated
• ⚠️ Do not exceed TB1 torque (27–30 in.lbs.) or heater connection torque (30–35 in.lbs.)
• ⚠️ Disconnect J52 slip terminal (green wires) before performing any HiPot testing

DIP Switch & Configuration Safety:

• ⚠️ Setting DIP switches or jumpers incorrectly may cause abnormal system behavior or component damage
• ⚠️ Switch 6 (Memory Reset) must be OFF upon final installation
• ⚠️ Do NOT change factory-configured jumpers J25, J26, J27 (heater type settings)
• ⚠️ In 120VAC configuration (Setups 5 & 6 only), Pump 1, Circ, and Ozone must all be wired to 120VAC — move J50 and J51 to Area 1 (Neutral)
• ⚠️ DIP Switches 2 & 3 must be OFF when configured for 120VAC

Critical System Limitation:

• ⚠️ A circulation pump cannot be used together with a 2-speed Pump 1 in this system. If your spa requires this combination, the BP501G2 board is required.

Water & Component Safety:

• ⚠️ Inspect all enclosure seals before installation — no water ingress permitted
• ⚠️ Never handle electrical components with wet hands
• ⚠️ Test Mode (DIP Switch 1 ON) exposes high voltage — for licensed service technicians only

Post-Installation:

• ⚠️ Verify all safety features before spa use
• ⚠️ Test GFCI operation after installation
• ⚠️ Check for error codes and monitor board on first startup

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🔍 Error Codes & Diagnostics

Power-Up Sequence:

On startup, the spa enters Priming Mode automatically. The display will show “RUN PMPS PURG AIR” during pump purge. Priming Mode exits automatically after 4 minutes, or can be manually exited by pressing a Temperature button.

Test Mode Indicators:

Display	Meaning
°T after temperature (e.g., “100T”)	System is in Test Mode (DIP Switch 1 ON)
“°F” or “°C” after temperature	Normal operating mode
“J29” on display at power-up	J29 heater disable connector is shorted — check for external switch closure or short at J29
“S-01”, “S-02” etc.	Software Setup selection screen (during Test Mode setup change)

Fault Log: Accessible via the Test Menu on TP800/TP900/spaTouch™ panels. Records system faults for service diagnosis.

Filter Reminders (default schedule):

Reminder	Default Period
Clean Filter	30 days
Test GFCI	65 days
Drain Water	100 days
Change Filter	365 days

⚠️ For complete BP501 error code documentation, refer to the Balboa BP501G1 Tech Sheet (see Downloads) or contact Parts4Tubs technical support.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ Two-pump spas (P1 + P2, no circ)	✅ Setup 1 — direct application	P1 is heater pump
♨️ Two-pump spas (P1 + P2, with circ)	✅ Setup 2 — circ as heater pump	Circ pump required
♨️ Single-pump + blower spas	✅ Setups 3 & 4	With or without circ
♨️ Single-pump only spas	✅ Setups 5 & 6	Optional 120V operation
♨️ Cal Spas (BP501G1 equipped)	✅ Compatible	OEM board for select Cal Spas models
♨️ Platinum Spas	✅ Compatible	Replaces CTR-BP501G1
♨️ Any BP501G1 system spa	✅ Direct PCB replacement	Confirm setup, chip number

This board is NOT suitable for:

• Spas requiring a 2-speed Pump 1 combined with a circ pump simultaneously — use BP501G2 instead
• Export 50Hz CE-market spas — this is a UL/North American 60Hz board

❓ Frequently Asked Questions

Q: How do I know which Setup my spa uses? A: Check the label inside your system enclosure lid — the Setup number should be written there. If not, check the wiring diagram attached to the inside of the spa pack cover, or contact Parts4Tubs with your spa make, model, and control system part number.

Q: My spa has a 2-speed pump and a circ pump. Will this board work? A: No. The BP501G1 cannot run a 2-speed Pump 1 together with a circulation pump. Your spa requires the BP501G2 instead. Contact Parts4Tubs for assistance.

Q: Is this an OEM or aftermarket board? A: This is a genuine Balboa Water Group OEM circuit board (G1351 / 56944-01).

Q: The board ships in Setup #1 — do I need to change it? A: Yes, if your original board was configured in a different Setup. You must adjust the Setup number, DIP switches, and voltage-select jumpers to match your original board’s configuration. Refer to the tech sheet and wiring diagram inside your spa pack cover. If you are unsure, contact Parts4Tubs for assistance.

Q: Can this board run on 120V? A: Yes, but only in Setup 5 or Setup 6, and only with appropriate 120V GFCI protection. In 120V mode, the heater outputs 1.25kW. Pump 1, circ pump, and ozone must all be rewired to 120VAC (J50 and J51 to Area 1). DIP Switches 2 and 3 must be OFF. Note that Clim8zone™ cannot be used in 120VAC configuration.

Q: Do I need a licensed electrician to install this? A: Yes. NEC Article 680 and most local codes require a licensed electrician for all hot tub electrical work. A permit may also be required in your jurisdiction.

Q: Which topside panel works with this board? A: The BP501G1 is compatible with a wide range of Balboa panels including TP200, TP400, TP500, TP600, TP700, TP740, TP800, TP900, and the full spaTouch™ line. See the Compatibility Guide section for version requirements. Contact Parts4Tubs if you are unsure about your specific panel.

Q: What warranty is included? A: 1-year manufacturer warranty from Balboa Water Group. Contact Parts4Tubs for complete terms.

Q: What if the heater won’t run after installation? A: Check that J29 is not shorted — a shorted J29 disables the heater. If “J29” appears on the display at startup, inspect the heater disable connector. Also verify DIP switch settings and ensure Switch 6 is in the OFF position.

📑 Downloads & Resources

📄 Balboa BP501G1 Tech Sheet — Current Version (Official PDF) — Full wiring diagrams, DIP switch settings, setup table, connector layout, panel configurations, and configuration options

⭐ Why Choose the Balboa BP501G1 PCB (G1351)

✅ Genuine OEM Balboa Water Group board — same component as original equipment; no compatibility guesswork
✅ Six field-selectable software setups — one board covers a broad range of pump and blower configurations
✅ Broadest topside panel compatibility — works with all Balboa TP and spaTouch™ panel families
✅ 5.5kW and 4.0kW heater variants available — select the right capacity for your system
✅ Advanced feature support — CHROMAZON3™, bba™2/bba™3 Bluetooth, Clim8zone™ heat pump ready
✅ 1-year manufacturer warranty — factory-backed coverage
✅ Parts4Tubs expert support — our team can help verify your setup configuration and confirm compatibility
✅ Made in the USA — Balboa Water Group, a Helios Technologies company

🛒 Why Buy from Parts4Tubs

✅ Fast US shipping
✅ Expert technical advice from spa specialists
✅ Competitive pricing
✅ Full warranty support
✅ Easy returns within 30 days
✅ Compatible parts and accessories available
✅ Help identifying the correct Setup, DIP switch configuration, and compatible topside panels

💡 Summary

The Balboa BP501G1 PCB (G1351) is a genuine OEM replacement circuit board for the BP501G1 control system platform. With six software-selectable setup configurations, it covers two-pump, blower, circulation pump, and single-pump spa arrangements operating on 240V (or 120V in Setups 5 & 6). It supports heaters up to 5.5kW and is compatible with every Balboa TP-series and spaTouch™ topside panel. If your spa runs a 2-speed Pump 1 without a circ pump, or a 1-speed Pump 1 with a circ pump, this board is the right choice — order with confidence and restore your spa to full operation.

Parts4Tubs is proud to be a Balboa Authorized Online Seller - make sure you only buy genuine Balboa parts from trusted sources.

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 are looking for things like setting the voltage as a lot of PCBs can be configured to run on both 115V and 230V.

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.

You turn on the hot tub and it trips the breaker – it is not common for a new PCB to fail out of the box (I have not seen one yet!) However, a common mistake is that the voltage has not been set correctly. If it is set for 115V and then you try and turn it on, the current draw will be a lot more (twice) than expected and the breaker will trip.

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. As mentioned, if the pack is set to 115V and your pump is meant for 230V, it will draw twice the current at half the voltage and trip your breaker. Check the manual for info on how to set the voltage.