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View Full Version : Carrier furnace 58mvb led diagnostics


rrfoss
Sep 1, 2010, 06:20 PM
The orange status light blinks fast indicating reversed polarity. But when I change the polarity it does not stop blinking the code. I checked the breaker panel for correct wiring the receptacle is good. Transformer and inducer motor are connected correctly to the board. Could I have a bad primary board.