I live in North Fl;orida and I have a 5 year old WeatherKing Air to Air Heat Pump MODEL 10PJA4201 which works Great, Good Cold Air in summer, Good Heat in winter, Until it gets really Cold out side, then it hangs up in the Defrost cycle the out door condensing unit only humms and the fan doesn't rum. The indoor Air handler and heat strips runs and recycles the indoor air without any heat from the Heat Pump. I got up one night and monitored it and the unit remained hung up in the Defrost Cycle for 3 hours, until I bumped the thermostat down enough to shut off everything indoors and out doors, after waiting approx 2 minutes i bumped thermostat back up calling for heat, everything came on and ran fine the rest of the day, until the next Cold night and it happened again, What might the problem be?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Take a look at this YouTube page that explains with good videos what are some of the common problems with heat pump noise. The one that seems dominant is the defrost cycle a heat pump goes thru when it melts ice off the evaporative coils. In defrost cycle, The compressor runs but the cooling fan does not, so you will hear a loud buzzing sound and the unit sounds like it is stalled...because only the compressor is running to generate heat to melt coil ice.
One thing you might check is to make sure there is not cold air blowing across the thermostat from one of the vents. I've seen this many times make the thermostat short cycle.
Some less expensive thermostats may be programmed to short cycle. If you have instructions available for the thermostat, try to find information or the "heat anticipator". It may have an adjustable setting.
The refrigerant and compressor are related in cooling the room.As for heating problem the thermostat needs to be checked.
if you're used to a certain temperature of air and your heat pump is producing much cooler air, take the following steps. (Note that a heat pump may go into a defrost mode to prevent icing. When this happens, it can temporarily output cold air. Also be aware that the heat pump will have to work harder to produce heat.)
1) First be sure the thermostat is set properly. Try raising the set temperature 5 degrees F. and waiting a few minutes.
2) Be sure the room-heating registers are open.
3) Check the heat pump filter. If it's dirty, change it.
4) Be sure the auxiliary heating elements are working .
5) Clean the coils of the outdoor condensing unit. If still the same problem then thermostat needs to be checked and replaced. Thanks.
If you are referring to the outside unit freezing up, the issue is in the defrost cycle. The defrost cycle works something like this: The unit reverses the flow of freon causing the inside coil to blow cold air into the conditioned space and the outside coil is now working like an a/c unit, it gets warm to melt the frost/ice. The inside unit electric heat strips come on so you do not notice the cold air being blown in. The fan on the outside unit stops running to allow the coil to get good and warm.
Now the unit should go into the defrost cycle every 90 minutes or so. It should not terminate the cycle untill the coil is clear of frost. There is an "Klixon" type termostat that measures the temperature of the outside coil. This is most likely the problem. It is prematurely terminating the defrost cycle. I'd start there first.
Hope this helps, Let me know if I can be of any further help.
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.
YOU HAVE ONE OF SEVERAL PROBLEMS , FIRST AND EASIEST TO REPAIR KEEP FILTERS CLEAN REPLACE EVERY 30 DAYS , #2 LOW CHARGE WILL CAUSE ICE ,# 3 A FAULTY INTERMITTENT FAN CONTROL SWITCH ,THIS WOULD BE MY # 1 GUESS SINCE I HAVE SEEN IT MANY TIME OVER THE YEARS , #3 WOULD BE A FAULTY DEFROST CONTROL BOARD OR SENSOR , THE REASON I LEAN TOWARD THE FAN CONTROL IS YOU SAY THE ICE IS ALSO IN THE INSIDE UNIT AND THIS IS MOST COMMON WITH RESTRICTED AIR FLOW OVER COILS AND SOME TIMES THE FAN SWITCH WILL CAUSE THIS PROBLEM THE DISCHARGE TEMPERATURE IS DIRECTLY RELATED TO THE TYPE OF UNIT ,TYPE OF REFRIGERANT IN SYSTEM AIR BALANCE CFM OF FLOW MANY VARIABLES IN THIS EQUATION,CANT SAY