Recent content by runfast

You will then not be able to run the fan on constant if you would like to. You can get a wireless stat or see venstar add-a-wire device.

Sounds like Carrier bimetal pilot burner. The click you hear is the gas valve going from pick to hold. Probably worn out bimetal pilot switch

It could be an intermittent short to ground. Measure voltage at r-c on board while furnace runs. If 24V then it is an intermittent short to ground. Check all wiring even tstat wires leading to tstat. I had on once that shorted to ground when homeowner cooked dinner and stood on floor near...

13v indicates the contactor on the a/c is partially shorted if the stat was calling for cooling.

may be under sized or low on refrigerant

noise indicates bearing trouble

Turn off, melt ice, turn back on, measure temp of suction line at condenser

Is there noise in the blower compartment

Here is a page that shows how they work. www.heatpumpmn.com/