Duroguard ( RHEEM) 2½ ton HP, 13 SEER, r22. DPGA030. There is a flashing led light on the defrost board, seems to be flashing a "3" code. Can't find a list of what the light or codes mean. Anyone know about this? Unit is newly installed, has a problem with contactor not picking up all the time. Otherwise seems to work.
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