!: WooW Dead Dual-Fuel Heat Pump Thermostat
Woke up to a cold house. Thermostat was dead. Heat pump and thermostat are about 18 months old and still under warranty. Heat pump and furnace brand is Payne (made by Carrier). 3 amp fuse was blown on PCB inside furnace. Replaced the fuse after a quick visual inspection of the thermostat wiring. Fuse did not blow while thermostat was in propane mode. Fuse blew when selecting heat pump. After checking the wiring at the heat pump, I found a wire going to a sensor was rubbing a copper refrigerant line. I had to take the lower cover off of the heat pump to get to the wiring. The wire had a small hole in the insulation where it rubbed the copper line, and the copper line was discolored from arcing. I taped the wire up, and tied it so now it does not touch any lines.
Dead Dual-Fuel Heat Pump Thermostat
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