⚡ Balboa VS501Z Spa Circuit Board (G1152) — Genuine Replacement for VS Series Control Systems

Get your hot tub running again with this genuine Balboa replacement board engineered for precision and performance.

📋 Product Overview

The Balboa G1152 circuit board is a genuine OEM replacement PCB designed for the VS501Z spa control system, delivering the reliability and innovation expected from Balboa Water Group. This board serves as the central brain of your hot tub, managing pump operation, heater control, lighting, ozone generation, and temperature regulation through Balboa’s advanced M7 sensor technology.

Built for the Balboa VS series platform, the VS501Z operates a 2-speed primary jet pump, an optional single-speed secondary pump or blower, an optional high-flow circulation pump, an ozone generator, and a 12V spa light. It is field-configurable for both 120V and 240V / 60Hz electrical service, making it one of the most versatile replacement boards available for residential hot tubs across the United States.

The board includes both the 25696 Plug’n’Click adapter for new heaters and the 25263 adapter for existing heaters, offering flexibility for various installation scenarios. This board is widely used across numerous spa brands including Cal Spas, Coleman Spas, Clearwater Spas, Master Spas, MAAX, QCA Spas, Coast Spas, Viking Spas, Vita Spas, American Whirlpool, and many others that utilize the Balboa VS control platform.

✨ Key Features

✅ Genuine Balboa Component — Authentic OEM circuit board from Balboa Water Group for trusted, factory-grade performance

✅ Dual-Voltage Operation — Field-configurable for 120V or 240V / 60Hz electrical service to match your spa’s wiring setup

✅ M7 Sensor Technology — Patented smart sensor system eliminates the need for a pressure switch and allows the heater to be mounted on either the suction or discharge side of the pump

✅ 2-Speed Pump 1 Control — Operates a dual-speed primary jet pump for both low-speed filtration/heating and high-speed jet operation

✅ Pump 2 or Blower Output — Supports a single-speed secondary jet pump or single-speed air blower (must not exceed 12 amps, must be 240V)

✅ Optional Circulation Pump — Accommodates a high-flow single-speed circulation pump (minimum 30 GPM required for heater operation)

✅ Adapters Included — Ships with 25696 Plug’n’Click adapter for new heaters and 25263 adapter for existing heaters

✅ Duplex Panel Support — Works with up to 2 topside control panels via 8-pin phone cable connections

✅ Ozone and A/V Outputs — Dedicated ozone connector (120V or 240V) plus audio/visual accessory output for stereo and fiber optics

✅ 12V Light Output — Powers standard incandescent or LED spa lights at 12 volts

✅ Built-In Diagnostics — Comprehensive error code system with topside display messages for quick troubleshooting

✅ 1-Year Manufacturer Warranty — Backed by Balboa Water Group warranty coverage

🔩 Technical Specifications

Specification	Detail
Brand	Balboa Water Group
Part Number (SKU)	G1152-01
Board Part Number	54357-03 (current version)
Board Type	Main PCB / System Circuit Board
Chip Number	VS501ZR2D
System Series	Balboa VS
System Compatibility	VS501Z
Input Voltage	120V or 240V (field-configurable)
Frequency	60Hz
Circuit Breaker Rating	20A (120V) / 50A (240V)
Neutral Required	Yes
Wiring Configuration	3-Wire (120V) / 4-Wire (240V)
Heater Output	1.4 kW (120V) / 4.0 kW to 5.5 kW (240V, varies by system)
Pump 1 Output	2-Speed (120V or 240V)
Pump 2 Output	Single-Speed, 240V only, must not exceed 12A
Circulation Pump	Optional — High-flow, single-speed, minimum 30 GPM
Blower Output	Alternative to Pump 2 — must not exceed 12A
Ozone Output	120V or 240V (must match circulation pump voltage)
Light Output	12V
A/V Output	120V or 240V
Sensor Technology	M7 (temperature and flow)
Pressure Switch	Not required (M7 technology)
Topside Panel Connection	8-Pin phone cable, duplex digital
DIP Switches	10-position configuration
Included Adapters	25696 Plug’n’Click adapter + 25263 adapter
Installation Note	Copper strap removal required
Certifications	US and Canadian safety approvals
Warranty	1 Year (manufacturer)
Country of Origin	Made in U.S.A.

⚠️ Important: Pump 2 MUST be 240V and MUST NOT exceed 12 amps. Installing a Pump 2 that exceeds 12 amps or runs at 120V can cause damage and possibly fire. When running 2 pumps, each pump must not exceed 12 amps.

ℹ️ Voltage Configuration: This board ships factory-configured for 120V with a jumper wire installed between J11 and J32. To configure for 240V operation, remove the jumper wire between J11 and J32. Field setup by a licensed electrician is required prior to use.

✅ Compatibility Guide

Compatible Spa Brands:

Brand	Notes
American Whirlpool	VS501Z-equipped models (2006+)
Cal Spas	VS501Z-equipped models
California Cooperage	VS501Z-equipped models
Clearwater Spas	Replaces 52606 and related boards
Coast Spas	Replaces 55371 (CS501Z)
Coleman Spas	VS501Z-equipped models
Divine Spas	VS501Z-equipped models
Elite Spas	VS501Z-equipped models
Hydro Spas	VS501Z-equipped models
MAAX / MAAX Collection	Replaces 54294-01 (MAAX 167 VS501Z)
Master Spas	VS501Z-equipped models
Nahanni Spas	VS501Z-equipped models
Oasis Spas	VS501Z-equipped models
QCA Spas	VS501Z and VS501 spa packs
Strong Spas	VS501Z-equipped models
Viking Spas	Replaces 53788 (VKV502) — verify pumps rated no more than 240V/12A
Vita Spas	VS501Z-equipped models

⚠️ Always verify your existing board’s chip number and part number before ordering. Circuit boards can look identical but be programmed differently.

Compatible Topside Panels:

Panel Part Number	Panel Name / Type
52144	VL200 (ML900) — 4 Button
52312	VL200
54094	VL401 (ML700) — 4 Button
54251	VL401 — 4 Button
51676	VL403 (ML400) — 4 Button
54104	VL403
53646	VL240
53565	VL240
51223	VL404
51248	VL404
53850	VL404
55050	VL260
53645	VL260
55559	VL260
54754	VL260
55049	VL260
55051	VL260
53566	VL260
53777	VL260
55129	VL400
50176	VL400
54107	VL402
54093	VL402
55349	VL406T
55570	VL406T
58-355-4113	HQ Eco 200 (Mini Oval)

Replaces These Part Numbers:

Part Number	Description
54357 / 54357-01 / 54357-02 / 54357-04	VS501Z board revisions (all versions)
54604-02	Balboa VS501Z
54294-01	MAAX 167 VS501Z board
54380 / 54380-02	Balboa boards
54381	Balboa / Viking Spa board
53551-02	GVS500 board
53553 / 53554	GVS501 (will not support Silent Sentry)
53787 / 53788	Viking Spa VKV502
54585	INFI07 board
55191	Balboa board (verify topside compatibility)
55227 / 55228	OS501
55405	MS520 (X801125)
56926	Balboa replacement board
33-0032B / 33-0032B-K	HydroQuip VS501Z equivalent
33-54357-K	HydroQuip board
59-138-3013	Distributor part number
9710-71	Alternate distributor number
301362	Alternate part number
623554	Alternate part number

Chip Numbers Replaced: VS501ZR1B, VS501ZR2B, VS501ZR2C, VS501ZR2D, VS240RR, 167R1B, INF107R1A, INFI07R1A, OS501ZR1A, SCS501R1A, VKV502R1, GVS501R1A, VS501R1B, VS501ZR1, KEYS100CR, CS5100DVR1, CS6000R1, VS300FL4R1A, VA300FLA, MX300FLX, BB54357

🎛️ Board Functions and Controls

Pump Control:

Output	Function	Rating
Pump 1	Main jet pump (2-speed)	120V or 240V — low speed for filtration/heating, high speed for jets
Pump 2	Secondary jets OR blower (single-speed)	240V only, must not exceed 12A
Circ Pump	Continuous circulation (optional)	120V or 240V, high-flow, minimum 30 GPM required

Heater Control:

Feature	Specification
Heater Type	M7 integrated flow/temperature sensor heater
Max Output (120V)	1.4 kW
Max Output (240V)	4.0 kW to 5.5 kW (depends on system configuration)
Temperature Range	80°F – 104°F (26°C – 40°C)
Hi-Limit Protection	118°F (47.8°C) automatic shutdown
Over-Temperature Alert	110°F (43.3°C) triggers OHS warning
Heater Mounting	Suction or discharge side of pump (M7 technology)
Pressure Switch	Not required (M7 eliminates the need)

Additional Controls:

Function	Capability
Lighting	12V spa light output (standard incandescent or LED compatible)
Ozone	120V or 240V configurable output (must match circ pump voltage)
A/V	Audio/visual accessory output — 120V or 240V
Filtration	Programmable filter cycles
Freeze Protection	Automatic pump and blower activation at 44°F (6.7°C)

---

🔧 Installation Requirements

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

Pre-Installation Checklist:

• Verify the chip number and/or part number on your existing board matches the compatibility list above
• Disconnect ALL power at the breaker/disconnect box
• Photograph ALL existing wiring connections before disconnecting anything
• Allow capacitors to discharge — wait at least 5 minutes after power is disconnected
• Verify whether your spa requires 120V or 240V configuration
• The included 25696 Plug’n’Click adapter is for new heaters; use the included 25263 adapter for existing heaters
• Removing the copper strap is REQUIRED on new installations
• Visually compare the new board to your existing board — they should look identical even if part numbers differ slightly

Electrical Requirements:

Requirement	Specification
Supply Voltage	120V / 60Hz (3-wire) OR 240V / 60Hz (4-wire)
Circuit Breaker	20A minimum (120V) / 50A minimum (240V)
GFCI Protection	Required (per NEC Article 680)
Neutral	Required for both voltage configurations
Ground Connection	Mandatory — equipment grounding + bonding per NEC Article 680
Dedicated Circuit	Required
Disconnect Box	Required within line of sight of spa (per NEC)

Voltage Configuration:

Configuration	Action
120V Setup (Default)	Leave jumper wire installed between J11 and J32
240V Setup	Remove jumper wire between J11 and J32

Key Connection Points:

Connector	Function
J1	Main topside panel connection
J17/J26	Auxiliary topside panel
J29	Ozone generator output
J43	Persistent memory jumper (reset required after DIP switch changes)
J11/J32	Voltage selection jumper (remove for 240V)
J47	Pump connector
DIP Switch Bank A (1–10)	System configuration — topside type, features, operating mode

💡 Tip: Label and photograph ALL connections before removing the old board. This board is not plug-and-play — it requires correct voltage setup, component wire configuration, and DIP switch settings. Reference the wiring schematics printed on the inside of the spa pack cover for your specific installation.

---

🛡️ Safety Warnings

Electrical Safety:

• ⚠️ ALWAYS disconnect ALL power at the breaker/disconnect box before any work on the control system
• ⚠️ Installation by a licensed electrician is required — this is not a DIY job
• ⚠️ Ensure correct voltage supply — verify 120V or 240V configuration before connecting power
• ⚠️ Verify GFCI protection is installed and functioning (required by NEC Article 680)
• ⚠️ Never operate the spa with covers removed from electrical components
• ⚠️ All wiring must comply with the NEC and local electrical codes
• ⚠️ Pump 2 MUST be 240V and MUST NOT exceed 12 amps — a non-compliant pump can cause damage and possibly fire
• ⚠️ Main power must be turned OFF before adjusting DIP switches
• ⚠️ Persistent memory (J43) must be reset to allow new DIP switch settings to take effect

Water and Electrical Safety:

• ⚠️ Ensure no water ingress into the control box
• ⚠️ Check all seals and gaskets during installation
• ⚠️ Never touch electrical components with wet hands
• ⚠️ Ozone and circulation pump must be the same voltage

Post-Installation:

• ⚠️ Test all safety features before use, including hi-limit sensor function
• ⚠️ Verify correct DIP switch settings for your topside panel type
• ⚠️ Check for error codes on initial startup — the board will enter priming mode (Pr) on first power-up
• ⚠️ Allow the system to complete its full startup sequence before making adjustments
• ⚠️ Circuit boards that have been opened from their sealed bag cannot be returned — verify the correct board through the clear bag before opening

---

🔍 Error Codes and Troubleshooting

Common Balboa VS501Z Error Codes:

Code	Meaning	What To Do
Pr	Priming Mode	Normal on startup. Lasts approximately 4 minutes. Ensure pumps are primed during this period.
OH	Overheat — sensor detected 108°F–110°F	Do not enter the water. Check water level, filter, closed jets, and pump operation. Allow to cool.
OHH / HH	Heater overheat — sensor detected 118°F	System shut down. Press any button to reset once water is below 108°F (42.2°C). Check for flow restrictions, dirty filter, low water, or closed jets.
OHS	Spa water overheat — 110°F detected	Spa functions disabled. Check water level, flow, and pump prime. Allow spa to cool.
FLO / FL	Flow problem or pressure switch fault	Check water level, clean or replace filter, open closed valves, verify pump is primed.
dr	Possible dry heater condition	Check water level, flow restrictions, closed valves, air bubbles, and pump prime.
drY / dY	Verified dry heater — occurred 3 times	Spa functions disabled. Resolve the issue, then press any button to reset and restart.
SnA / SA	Sensor A malfunction	Verify sensor A connections on the board. Check pins are not bent. Replace sensor if needed.
Snb / Sb	Sensor B malfunction	Verify sensor B connections on the board. Check pins are not bent. Replace sensor if needed.
Sn1	Hi-limit sensor malfunction	Heater deactivated. Check sensor connection and wiring. Replace if faulty.
Sn3	Temperature sensor malfunction	Heater deactivated. Check sensor connection and wiring. Replace if faulty.
SnS / Sn	Sensors out of sync	If alternating with temperature display, may be temporary (monitoring for 1 hour). If blinking without temperature, spa is shut down — contact service.
HFL	Substantial temperature difference between sensors	Could indicate a flow problem. Check water level, filter, and pump operation.
LF	Persistent low flow	Occurs after 5 HFL faults within 24 hours. Heating disabled. Check for obstructions and flow issues.
ICE / IC	Freeze condition detected — 44°F (6.7°C)	All pumps and blower activate automatically. This is a protection mode, not an error. No action required.
COL / Cool	Water temp 20°F below set point	Normal when first filling. Pump and heater activate automatically to heat the water.
CFE	Configuration error in DIP switches	Check DIP switch settings match your spa equipment. Reset persistent memory (J43).
Ecn / Ec	Economy heating mode active	Not an error. Water heats only during filter cycles. Change mode by pressing temperature then light button.
Std / St	Standard heating mode active	Normal operating mode indication.
No COM	Communication error — topside to board	Check phone cable connection between topside panel and circuit board. Try unplugging and reseating.
— — — —	Watchdog fault — 118°F detected	Entire system disabled. Allow to cool. Contact a service professional.
pd	Power supply issue	Unit running on battery backup or insufficient power supply. Check incoming power.
Hold	Panel buttons pressed too many times	Wait a moment and try again. This is a temporary lockout.

💡 Startup Sequence: On initial power-up, the board displays the software ID and version number, then enters Priming Mode (Pr). Use this time to verify pumps are running and primed. After priming mode ends, the system begins normal operation.

---

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Balboa VS501Z-equipped hot tubs	✅ Direct replacement	Drop-in replacement for any spa using the VS501Z control system
♨️ Balboa VS500Z-equipped hot tubs	✅ Direct replacement	Part 54357-03 replaces the obsolete VS500 circuit board
♨️ Cal Spas, Coleman, Clearwater, Master Spa	✅ Compatible	Verify existing chip/part number before ordering
♨️ Viking Spas with VKV502 boards	✅ Compatible	Ensure pumps are rated no more than 240V / 12A
♨️ MAAX / MAAX Collection spas	✅ Compatible	Replaces 54294-01 (MAAX 167)
♨️ HydroQuip 33-0032B equipped spas	✅ Compatible	Cross-compatible replacement
♨️ Coast Spas with CS501Z systems	✅ Compatible	Replaces 55371

This board is designed for:

• Replacing faulty or failed original Balboa VS501Z / VS500Z circuit boards
• Upgrading older VS500 spa control systems to the current VS501Z platform
• Restoring full spa functionality after board failure (no heat, error codes, no pump control)
• Maintenance, repair, and upgrade of spa control units across multiple spa brands

---

❓ Frequently Asked Questions

Q: How do I know if this board fits my spa? A: Check the chip number printed on your existing board’s control chip. Compatible chip numbers include VS501ZR2D, VS501ZR2C, VS501ZR2B, VS501ZR1B, VS240RR, 167R1B, INF107R1A, INFI07R1A, OS501ZR1A, SCS501R1A, VKV502R1, GVS501R1A, and others listed in our compatibility section. You can also match by system part number. If you cannot find a model number on the PCB itself, look for a sticker on the outside of the spa pack that lists the model number and electrical ratings. Visually compare your existing board to the product images — they should look the same even if firmware revisions differ slightly.

Q: Is this an OEM or aftermarket board? A: This is a genuine OEM Balboa Water Group circuit board. Parts4Tubs is proud to be a Balboa Authorized Online Seller — you are getting authentic Balboa parts from a trusted source.

Q: Do I need a licensed electrician to install this? A: Yes. The NEC and most local codes require a licensed electrician for hot tub electrical work. This board requires field configuration for voltage (120V vs 240V), component circuit setup, and DIP switch settings. A permit may also be required depending on your jurisdiction.

Q: Will my existing topside panel work with this board? A: This board is compatible with a wide range of Balboa topside panels including the VL200, VL240, VL260, VL400, VL401, VL402, VL403, VL404, VL406T, and HQ Eco 200 (Mini Oval) series. DIP switch configuration is required to match your specific panel type. See the full topside compatibility list above or contact Parts4Tubs if you are unsure.

Q: Does this board work with 120V or 240V? A: Both. The VS501Z is field-configurable for either 120V/60Hz (3-wire) or 240V/60Hz (4-wire) operation. The board ships configured for 120V with a jumper wire installed. To convert to 240V, remove the jumper wire between J11 and J32. Always verify your spa’s electrical configuration before ordering and before powering on.

Q: What adapters are included? A: The board includes the 25696 Plug’n’Click adapter for use with new heaters and the 25263 adapter for connecting to existing heaters. An optional heater cable (Balboa 25263, 3-prong plug, 16 inches, 10 AWG) is also available to add to your order.

Q: What if my buttons control the wrong pumps after installation? A: This is a mode configuration issue. You will need to adjust the DIP switches on the PCB or change the low-level programming mode on the topside control. Copy the DIP switch settings from your original board, or refer to the wiring schematic on the spa pack cover for the correct configuration.

Q: What if the hot tub trips the breaker after installing the new board? A: This is commonly caused by incorrect voltage configuration. If the board is set for 120V but your spa is wired for 240V, the current draw will be double what is expected, tripping the breaker. Unplug all components (heater, pumps, blower) and power on the board alone. If it still trips, check the voltage jumper setting. For 240V operation, the jumper between J11 and J32 must be removed.

Q: What warranty is included? A: This board comes with a 1-year manufacturer warranty from Balboa Water Group. Contact Parts4Tubs for full warranty terms and support.

Q: Can I return the board if it’s the wrong one? A: Circuit boards shipped in sealed bags must remain sealed for return eligibility. Verify through the clear sealed bag that you received the correct circuit board before opening. Once the sealed bag is opened, the return policy for spa circuit boards is voided. Always confirm your part/chip number before opening.

📥 Downloads and Resources

📄 VS501Z User Guide / Hot Sheet (PDF) — Wiring diagrams, DIP switch configurations, installation instructions, and persistent memory reset procedures

🏆 Why Choose the Balboa VS501Z G1152

• ✅ Genuine OEM Balboa — Authentic factory component, not aftermarket
• ✅ Proven Reliability — M7 technology delivers fewer returns and longer life expectancy than traditional non-M7 systems
• ✅ Universal Compatibility — Works with dozens of spa brands and over 25 topside panel models
• ✅ Dual-Voltage Flexibility — One board covers both 120V and 240V installations
• ✅ Adapters Included — Both new heater and existing heater adapters ship with the board
• ✅ Made in the U.S.A. — Manufactured by Balboa Instruments, Inc.
• ✅ 1-Year Warranty — Full manufacturer warranty coverage
• ✅ Comprehensive Diagnostics — Built-in error code system simplifies troubleshooting

🤝 Why Buy From Parts4Tubs

• ✅ Balboa Authorised Online Seller — genuine parts guaranteed
• ✅ US-based company (Boca Raton, FL) with local support
• ✅ Fast US shipping
• ✅ Expert technical advice from spa specialists — buy from a person, not just the internet
• ✅ Competitive pricing
• ✅ Full warranty support
• ✅ Easy returns policy
• ✅ Compatible parts and accessories available — including heater cables, sensors, and topside panels
• ✅ Help with identifying the correct replacement board for your spa

Not sure which board you need? Contact the Parts4Tubs team with your spa make, model, and existing board part number or chip number. We’ll help you find the right match.

⭐ Summary

The Balboa G1152 circuit board for VS501Z is a genuine OEM replacement that restores full control and performance to your hot tub. Compatible with dozens of spa brands and over 25 topside panel models, this dual-voltage board features M7 sensor technology, supports up to 2 pumps plus ozone and lighting, and includes both heater adapters. Backed by a 1-year Balboa warranty and available from Parts4Tubs — your trusted, authorised Balboa parts source. Order today and get your spa running like new.