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No heat at night

I have a colman evcon heat pump bphh0301ba during over night running, compressor and condensor fan will not run a loud clicking noise from unit and aux light on thermostat blinks. system runs good during the the day

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You have a poor low voltage connection from the thermostat or a bad contactor.The contactor is the main relay control inside the condensing unit. The incoming voltage wires connect to it.
Contactors are inexpensive. I would change that first.
Check all your low voltage wires in the condensing unit for loose connections.

Posted on Dec 11, 2009

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BUZZING NOISE FROM MY HEAT PUMP


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.

https://www.youtube.com/results?search_query=American+Standard+5000+Heat+Pump+makes+a+buzzing+noise
Defrost cycle noise video:
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Aeg santo feezer getting hot on the sides and making a funny noise


That is a very bad sign, but before you unplug it pull the machine out from the wall and check to see if it feels hot back there as well. Then remove the lower cover and find the condersor fan motor. Its the only fan back there. I'd willing to bet that the fan is not running. The purpose of the the fan is draw air across the compressor and blow it through the condensor therefore lowering the temperature on both parts. When its not working/ running, the heat from the compressor and the condensor is pass onward to the machine and the machine then acts as a heat sink

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My fridge is not colling and compressor geting heat.


If this is a SxS , the overload/relay which plugs onto the compressor is probably bad if the compressor clicks off or does not run at all ,OR , the fan which cools the compressor (condensor fan ) is not working (bad motor ) , also make sure the coils are clean at the bottom in the front (condensor coils ) .

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1 Answer

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My first thought is a compressor not running from your description of the clicking.

Compressor problems can be:

Could be a Relay, stiff compressor/motor assembly, low voltage, run, or start capacitor if so equipped.

You will need a voltage (amp meter would help) meter to check the voltage (amp draw) at start up on the compressor to determine if you are making headway on finding the cause.

You will have to verify the voltage for sure and during start up 1st unplug the refrigerator let it sit for 10 to 15 minutes. 1st During this time check the voltage at the wall plug. 2nd AT the compressor relay (2 wires to the compressor) when it first try's to start meaning while someone plugs it in. The reading can be up to 10% lower during this time. continue to watch the volts as it runs until it clicks again and cuts off. The voltage then should return to where it was at the plug-in. If not We now have a problem outside the compressor area. If so we are on the right path.

A replacement relay and overload (with the run and or start capacitor if equipped) replaced as a whole at the same time will either confirm its one of these components. With them replaced and correct voltage range during start of the compressor it will either work or your compressor is out.

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1 Answer

Condensor sounds like it moans for a couple of seconds instead


Hello aeruslady1,

Do you mean the compressor? I'm sure you do. The condenser is the hot refrigerant line that comes off of the compressor.
It just sounds like you have an old compressor. I have seen them make noises for years before they take a dump. If it continues to run loud even after it starts however, then you may need to clean the condenser coil or replace the condenser fan motor. Another thing that might make it run loud is some refrigerant lines may be rubbing against something. This can be remedied by bending the lines.

Hopefully this helps.

Sincerely,

shays5415

Dec 03, 2008 | Refrigerators

1 Answer

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if you have ice buildup then the fridge may be low on freon.
or there is dust clogging around the pump or fan is not running.
remove the bottom or back and look around the compressor.
see that the fan is running.

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1 Answer

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sound like you condensor fan motor is going out... it might be a Compressor problem.. .check the condensor fan motor and proper air flow..

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1 Answer

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The compressor behind the fridge should cycle on and off as the machine maintains temperature, but the evaporator fan inside the freezer will keep running, except when the fridge goes into defrost. If the noise is coming from the fan inside the freezer, there could be some ice on the frame of the fan and the blades are touching the ice. If the noise is coming from behind the fridge it could be the condensor fan motor. This fan is situated behind the fridge in front of or next to the compressor. It keeps the condensor cool by blowing air onto it. Check this fan. The blades could be touching the pipework or something.

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