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Cools but no heat compressor or fan doesn't come on but on cool cycle

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  • Danny Clark
    Danny Clark May 11, 2010

    Was the thermostat recently replaced? Is is a "Hunter" brand thermostat?

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  • 34 Answers

Generally compressor will not come on in heat mode is this a heat pump or combo heat ac unit if outdoor unit look for overload button on unit itself

Posted on Oct 10, 2009

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Fan stops working when unit is running in the cooling mode


If this is a window type unit, it is set on energy savings. This makes the fan cycle with the compressor. Take it off energy savings and the cooling should cycle with the cold control and the fan should stay on..

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The truck is overheating every time the a/c is on but the thing is when the a/c is turning off and on every 10 seconds, and engine looses much power with a/c on... thanks


{: ) If the engine running performance is well and good without the a/c, observe the a/c compressor performance and cooling. A cycling compressor can be caused by high pressure on the discharge side. The higher the pressure, the more heat will be generated specially at the a/c condenser. Engine overheating and poor a/c cooling has one common factor: the engine cooling fans. Normally when you turn on a/c, additional load and heat will stress the engine. For the cooling fans, there is a low and hi speed. If these cooling fans do not operate at precise timing and speed, the heat generated by the condenser and radiator will combine and rise up to a critical level. So better check carefully the condition and operation of your cooling fans. Check also the fan relays and fuses.
I just hope it's not a module issue, it will need more diagnostics, and very costly ,too.

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Maytag MDS2351- came home one day and noticed water coming from where u get the ice and water when i opened the freezer it was not cool and everything i had in there was defrosted and then when i went to...


Your fridge operates like that: a compressor liquefies freon vapours; this creates heat so the hot liquid goes thru a cooling radiator with a fan on it (these 2 elements are at the rear bottom of the fridge) the freon fluid goes to an evaporator, turns to vapour and absorbs heat in the process, cooling the evaporator; a fan blows air over the evaporator and spreads the cooled air all over the fridge; the vapours return to the compressor.
In the rear of the fridge you should make sure that the radiator is clean and the fan working; inside the fridge you should make sure that the evaporator is not covered in ice and/or dirt and its fan is working. If necessary clean both.
If they are clean , the fans work but the evaporator isn't cold then either the freon circuit has sprung a leak and all the fluid has been lost or the compressor isn't working - to find out which just put your hands on the compressor : if it's hot and vibrates the fluid has been lost, if it doesn't vibrates then the compressor isn't working.
The compressor isn't working because either the thermostat or itself have failed. To find out which the compressor will have to be powered directly from the mains: if it starts then the thermostat must be replaced, if it doesn't the compressor will.
To fix the freon circuit or to replace the compressor a certified professional is mandatory, you must call one.

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1 Answer

My Whirlpool ET8WTKXKT0 doesn't cooling down. The fan is working, but the compressor like dead. What I have to check? Thanks. Victor


Its the problem with compressor,The problem is weak compressor.The refrigerant ( R12) in the compressor is got low.The compressor is weak.The compressor needs to be replaced.-------------- The working procedure of this unit is as follows: --- The compressor starts then it cools the freezer section. When the freezer reaches its cooling level the defrost cycle starts functioning. In this cycle the fan in the freezer section starts running and the cool air in the freezer section is passed to the fridge section and the fridge section gets cold. The air from freezer to refrigerator passes from the section, in that section the damper is located.------------ But as you mentioned that freezer not cooling this indicates problem with compressor.When compressor cools the freezer section then fridge section gets cold.If freezer section is not getting properly cold then fridge section will not cool properly/.So the problem relates to compressor.---------- In the compressor there is a refrigerant called FREON.With the help of this Freon the compressor cools the freezer section.Freon is a gaseous type cooling agent.The compressor will stop cooling when coolant gets leaked from its chamber.--------- Again recharging the Freon is possible, but the cost for that recharging is approx the cost of new compressor.So its always advisable to get compressor replaced.Because new compressor has warranty for few years.------------------ You can get required parts from from online sites like: --- www.repairclinic.com or from searspartsdirect online site. --------- This should help.Thanks.Helpmech.

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Have an lg reverse cycle was sitting for 12 months. the fan works fine but cooling or heating is not working.when i first turned it on it took about 5 minutes then compressor kicked in once in got to...


I think, your compressor gets over heated due to condenser block-clean it. Less rpm fan speed. -Replace capacitor. 3.Check compressor running capacitor. If weak replace it. Helpful?

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Outdoor fan does not come on


most likely it the the cap that is bad. Is this in heating or cooling mode?

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I assume the compressor is running since you indicate you have some cool air.

Check to make sure the compressor fan is running. This fan should be near the compressor. Its purpose is to pull room air across the coils and remove the heat from them. If this fan does not operate properly, the refrigerant will not be cycled properly. If the fan is not turning, you will need to replace the fan motor.

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1 Answer

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You need to have an AC tech come out and do some preliminary testing on this.

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