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Balboa 52702 Circuit Board SUNS25R1(x) Alt Replacement, Sunset Spas

Balboa 52702 Circuit Board SUNS25R1(x) Alt Replacement, Sunset Spas
  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 52702
  • Chip Number: SUNS25R1(x)

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Item Number: 22-4276

  • Description
  • Details
  • Reviews

The Balboa 52702 SUNS25R1(x) circuit board is discontinued but we have options.

Option 1: Scroll down to RELATED PRODUCTS for other replacement options.

Option 2: Get your circuit board repaired.  Please contact us before sending items in for repair.

Option 3: Contact us to inquire about a new retro-fit system control box replacement.

The Balboa 52702 SUNS25R1(x) circuit boards are also found in hot tubs made by Sunset Spas and possibly others.
Cross Reference Verification
Serial Numbers:
  • 52702
  • BAL52702

Chip Numbers:
  • SUNS25R1A
  • SUNS25R1B
  • SUNS25R1C
  • SUNS25R1D
  • SUNS25R1E
  • SUNS25R1F
Additional Cross Ref., Compatibility & Installation
This alternate replacement circuit board can only be used in systems originally with a neutral wire on the terminal block of the circuit board.
Tip: When replacing a hot tub circuit board, testing the heater and replacing it (if bad), is recommended before installing or applying voltage on a new circuit board.
Note: A continuity test is not a sufficient heater test. Contact us by phone for more details on testing a heater.

Tip: Burned circuit boards or burned heater relays are often due to a loose electrical connection or a bad heater or both.
If all connections are tight and if the heater is good then the heater relays are probably old and worn out.
If a burned relay was powering a pump and all electrical connections are tight then the relay is probably old and worn out or the pump might be bad or going bad or all three.
Replacing the heater and/or pump with a new one is recommended if any of those scenarios apply.

Tip: See RELATED PRODUCTS below for more Balboa 52702 SUNS25R1(x) replacement options.
Tip: Other items shown in RELATED PRODUCTS below have also been found in hot tub systems with Balboa 52702 SUNS25R1(x) circuit boards.

Unsure of what something on this page means?

Please contact us so we can better assist you.


  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 52702
  • Part Number: SUNS25R1(x)
  • Item Number: 22-4276


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