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Balboa 51987 Circuit Board C2000R2(x), Cal Spa ELE09100280

Balboa 51987 Circuit Board C2000R2(x), Cal Spa ELE09100280
  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 51987
  • Chip Number: C2000R2(x)


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Item Number: 22-5516

  • Description
  • Details
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The Balboa 51987 C2000R2(x) circuit board is discontinued but we have options.

Option 1: Get your circuit board repaired.  Please contact us before sending items in for repair.

Option 2: Contact us to inquire about a new retro-fit system control box replacement.

The Balboa 51987 C2000R2(x) circuit boards are also found in hot tubs made by Cal Spa under the part numbers ELE09100280, CALELE09100280, 09100280.
Cross Reference Verification
Serial Numbers:
  • 51987
  • BAL51987

Chip Numbers:
  • C2000R2B
  • C2000R2C
Additional Cross Ref., Compatibility & Installation
Configuration instructions:
For circuit boards having chip number C2000R2A set jumper "J28" (MISC 4) with sleeve on both pins.
For circuit boards having chip number C2000R2B or C2000R2C set jumper "J28" (MISC 4) with sleeve on only one pin (it doesn't matter which pin).
System Control Box Serial Numbers
Tip: The system control box is usually located below the hot tub and the circuit board mounts inside of it.

The Balboa 51987 C2000R2(x) circuit board can be found in the following hot tub system control boxes (but not limited to).

System Control Box Serial Numbers:
  • 50864-11
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: Items shown in RELATED PRODUCTS below have also been found in hot tub systems with Balboa 51987 C2000R2(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: 51987
  • Part Number: C2000R2(x)
  • Item Number: 22-5516


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