Henry Lee
New Member
I live in Virginia. The temp is around 45F. I have Ducane heat pump outside. it is not running at all but the inside furnace fan is working well. I just changed the defrost circuit board since the HVAC service guy said the old one needed to be replaced. The thermostat seems in good condition because i just got a new Honeywell 5-1-1 programming one and works well. So far, the defrost circuit board and thermostat are all brand new. What is the problem to cause the heat pump not running? I pressed the valve button on the heat pump which can make it run. But it stops if i release the press. Is there possible to be the circuit board wiring problem?
Any advice is appreciated. it is so cold here.
Any advice is appreciated. it is so cold here.