Part # 59-138-1660
Manufacturer Code 51364
Caldera Spas Replacement BoardBalboa circuit boards are marked with a ?Chip Number? that is located on a white label placed on the logic chip near the center of the board.
USES 30337 DUAL SENSOR (COMBINATION TEMP AND HI LIMIT)
240 VOLT TRANSFORMER 30274-2
120 VOLT TRANSFOMER 30274-1