Performed ac pm on HeatPump system. Found filter was replaced already, new, but unit switch was in off position. Turned on and fan started running, thermostat not calling for anything. Found low voltage wiring was incorrect. Looked up installation manual for unit and corrected wiring. Returned power to system and checked ac operation. Normal delta air temps, normal refrigerant pressures and temps, normal amperages on compressor, od fan, and blower. Shut off unit and checked capacitor and contactor, in spec. Used high pressure spray to clean coils, weren’t dirty at all, new system. Returned power to unit and ran ac again. Unit operating normal at this time.