Defrost Cycle Problems with Heat Pump
It hangs up in the defrost Cycle when it gets really cold out, causing only the Heat Strips and the Air Handler to recycle the indoor air which doesn't provide much Heat. If i bump the thermostat down causing everything to shut off, for a couple of minutes and then bump thermostat up enough to call for Heat everything comes on and works fine the rest of the day and night until it gets reall Cold out, then the same thing happens again, with the cond.unit hung up in the defrost cycle, the cond. only Humms and the fan doesn't run, what might the problem be? I suppose its in the defrost cycle and froze up. I lowered the thermostat to 65 for a couple of minutes,everything shut down, then bumped it up to 70 everything came back on, but the heat just hums and fan will not run. It tries but can't seem to get started. What can I do?
Heating & Cooling - Weather King - 12AJA4801AH Air Conditioner
Answers & Comments
It's a defrost board issue. The timer on the board or something similar is hanging up. Unfortunately the solution is to replace the board. By lowering the temp. on the T-stat you are resetting the timer on the board. As you see that only works until the next cycle.