I am working on a split system. The contactor, cap, breaker, sub panel, all checks out good. I have no indicator lights, that indicates a power problem. How do I check the circuit board? or any recommendations:furious:?
did you verify power at the unit? if the power is to unit and you have no indicator lights, i would check xformer next. if that is suppying 24 volts to board, then the on board fuse or board must be bad
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