AC tune up 3 ton Carrier AC system. 21 temp split. Both coils are going n good condition. All electric motors and components ok. Field and manufacturer wiring ok. Refrigerant pressures/subcooling ok. Drain)condensate pump ok. Filter ok. Compressor Amos)indoor Amos/ outdoor voltage ok. System us operating well at the time of this maintenance.
Perform peco heat pump tune up check electrical low and high voltage ok, check filter filter is clean, test back up 10 kw electric heat ok, indoor and outdoor coil are clean, check temp rise ok outdoor unit refrigerant pressures ok capacitor and contactor ok cycle heat pump check defrost ok capacitor and contactor ok
Package heat pump not working, customer is using package unit heat pump to heat up basement/shop area,,,,,,,,blowing 3 amp fuse, upon arrival found units breaker off, with 3 amp fuse holder jumper with aligator clips, durIn investigation, Putin in a resetanle 3 amp breaker to test unit, found ecm blower motor running with all thermostat wires disconnected from stat, check voltage and getting 24 bolts and also 243 volts, found black spot/burnt on back of board, new board need to installed then We run and test unit,