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check the thermostat also check the inline fuse for the electric heat coil . check wires in control panel they tend to burn and last check to make sure reversing valve is changing over located by the compressor
depends if gas or electric on gas u have 120 volts if u have a universal transformer u will hve several wires and on the transformer it will say 120one color 240 another color and common is one color hook black wire to 120 wire and common to ur white wire from unit and ur 2 low voltage wires dont matter if it is electric use the 240 wire and common wire wires from unit dont mater just use the same 2 wires u unhookes and low voltage wires dont matter best advice is to put a 3 amp fuse inline on the low voltage side cause something caused the ransformer to go out and its probably a shorted wire this will blow the fuse instead of burning up the transformer
The outside fan may run if the unit is in defrost mode this is normal for most heat pumps it is there way of trying to keep the outside unit from staying iced over so the next time the unit runs it will have air flow through the coil and the ice will not be there to prevent air flow.
if your system is a heat pump you can switch to heat and see if coil outside gets cold while indoor blows warm air - then switch back to a/c - both coils should not be cold at the same time - low freon pressure / dirty coil / dirty filter / low air flow causes freezing
Hi!!! Does your ac unit work fine?If not check your low voltage problem..You have a low voltage problem check the wire going out to your condensor make sure that they are not touching..Good luck..Check low voltage wires..short in progress..