Coleman Airxcel 48000 series 15KHP
My rig is going on 6 years old in March. The rear roof hvac unit is an Airxcel 15k heat pump and has work well until now. We were in NE GA at the end of October and used the heat pump in cold weathe...
Forum Discussion
There is a compressor relay on the upper control board. You disconnect 120 power and then jump the 2 wires. Verify 120 volts on the jumped wires. IF the compressor comes ON, then your control board relay is probably bad. This just verifies that the Capacitors and Compressor runs. You may still have a 12 volt control problem activating the compressor relay. There is a 12 volt connection on the control board that when 12 volts is supplied will activate the relay. Supply 12 volts to the "Y" terminal should activate the relay. If you do NOT have 12 volts at the Y when trying Heat or Cool, then either the wall tstat is bad or the Y wire from the tstat to the upper control board is open. Doug
