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Balboa 52128 Circuit Board REC99R1(x), Marquis Spa 600-6270

Balboa 52128 Circuit Board REC99R1(x), Marquis Spa 600-6270
  • Manufactured by: Balboa Water Group, Inc.
  • Part Number: 52128
  • Chip Number: REC99R1(x)

$506.62



Item Number: 22-8060

  • Description
  • Details
  • Reviews
Please read entire page before placing an order.

For a money saving option, give us a call and ask about getting your circuit board repaired.

This new OEM circuit board is for replacing Balboa 52128 circuit boards having a REC99R1(x) chip number.

The Balboa 52128 REC99R1(x) circuit boards are also found in hot tubs made by Marquis under the part numbers 600-6270, M600-6270, M6006270, 6006270.

Tip: The "(x)" shown above is shorthand for a range of last letters on REC99R1 chip numbers this circuit board can replace.

Please note: A list of chip numbers this circuit board can replace is specified in the CROSS REFERENCE VERIFICATION section below.

Please Note: The numbers on the new circuit board you receive may be different and the components may look slightly different but it will still connect the same and it is a fully compatible OEM replacement , unless specified otherwise in the ADDITIONAL CROSS REF., COMPATIBILITY & INSTALLATION section below.

Cross Reference Verification
Step 1 of 2:
Tip: Locate the serial number on the old circuit board being replaced.
Tip: The serial number is on a sticker on the old circuit board (not the box).
Tip: The serial number is shown on the sticker preceded by S/N or P/N (part number).
Tip: The image above shows an example of a serial number sticker (click image to enlarge it).

Verify the serial number on the old circuit board being replaced is in this list.

Serial Numbers:
  • 52128
  • BAL52128

Step 2 of 2:
Tip: Locate the chip number on the circuit board you are replacing.
Tip: The whole chip number is on a sticker located on the circuit board (not the box).
Tip: This is a different sticker than the serial number sticker.
Tip: The chip number sticker usually has two lines of text and the top line is the whole chip number (the bottom line is not needed).
Tip: See image above for an example of a chip number sticker and where they're typically found on the circuit board (click the image to enlarge it).

Verify the chip number on the circuit board being replaced placed is in this list.

Chip Numbers:
  • REC99R1A
  • REC99R1B
Additional Cross Ref., Compatibility & Installation
ATTENTION: This is a special order circuit board, that takes approximately 2 weeks to ship out and there is no returns and no refunds.
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.

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: 52128
  • Part Number: REC99R1(x)
  • Item Number: 22-8060


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