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Heater Relay Board, IQ 2020, 2009-2011 (Replaces #76071)
With this circuit board you can replace the existing faulty heater relay and once again heat your Hot Springs Spa.
To diagnose a faulty relay, first turn temp up high - Test for voltage at heater terminals and input at board, If no voltage at heater but voltage at board input then the board is faulty
