Balboa 54352, 54355, 53620 (MAS501SR1(x), MAS501R1(x)) Circuit Board

Cross Reference Verification

Serial Numbers:

• 54352, 54355, 53620
• BAL54352
• BAL54355
• BAL53620

Chip Numbers:

• MAS501R1A

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 54352, 54355, 53620 MAS501SR1(x), MAS501R1(x) circuit board can be found in the following hot tub system control boxes (but not limited to).

System Control Box Serial Numbers:

• 53619

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.
See RELATED PRODUCTS below for heater replacements.

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 54352, 54355, 53620 MAS501SR1(x), MAS501R1(x) circuit boards.

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