My home heat pump works fine in AC mode. But when I switch to heat mode the compressor does not run, only the air handler fan runs which results in no temp change. I am fairly familiar with AC only systems and have been reading about heat pumps but I don't know where to start with this one. Because it works fine in AC, I know the capacitor, compressor, contactor etc. should all be fine. The air handler runs so I suppose the thermostat is sending the signal to heat. What am I missing?
Unit is a Goodman package unit, probably a 3 ton unit. About 15 years old. Roof mounted. Outside ambient temp 50- 60's.
Unit is a Goodman package unit, probably a 3 ton unit. About 15 years old. Roof mounted. Outside ambient temp 50- 60's.