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Replacement Balboa Expander Board for Pump 2, single speed. OEM part number 53544. This expander board is usually found on the VS510SZ and EL2001M3 Balboa Spa Controllers.
SpaGuts P/N: 10-175-3544
Board Dimension (Approx): 3.125 inch x 1.625 inch
This item comes with a one year limited warranty, and is Non-Returnable.
When selecting your spa circuit board, it’s critical that you go by part numbers and NOT just by appearances. The part number on a spa circuit board can be found on a white sticker located directly on the circuit board (The ID label may be located on the board relays or on the transformer). Buy based on this part number. Do NOT purchase a hot tub circuit board just because it looks the same OR have the same Model Number as the one you’re replacing. Spa circuit boards can look identical, but be programmed differently to work with different spa controllers and topside panels. NOTE that most circuit boards need to be configured in the field to work with the existing spa components and power ratings, and a licensed professional is recommended for installation and configurations. If this circuit board is being used as an optional replacement for the original circuit board, please follow the new circuit board wiring diagram for proper installation and configuration setup. Replacement spa circuit boards are shipped in clear sealed bags with Yellow Warning Label. Verify through the clear sealed bag that the correct circuit board was received prior to opening the bag. Sealed bags that are opened voids the return policy for spa circuit boards.