Question about Kenmore 54501 Dehumidifier

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Whirlpool 50 pint dehumidifier

Starts to run, then begins screeching and smells like something is hot or burning...then shuts off

my whirlpool AD50G1 does the same thing.

fan runs but the compressor wont start. i think it might be a non resettable thermal overload fuse or a thermal breaker malfunction.

there should be a safety mechanism for shutting off the compressor if too much heat builds up so the system doesnt cause a fire. most systems have a fuse that must be replaced, or a breaker. in the latter a thermally sensitive spring disconnects power from the compressor and reconnects it when it cools down. an electric arc at that connection can damage the contacts and cause the breaker to shut off power and not turn the device back on. i am going to try to bypass that device, it is located under the plastic cover on the compressor tank body where the white and black wires go into it. usually there is an underlying problem, seized pump, dehumidifier fan seizure, or a loss of coolant / lubricant in the compressor reservoir.

if the compressor buzzes but does not cycle on, it is seized, get a new dehumidifier. if it does nothing, check other circuits, or bypass humidity sensor, tank switch, ect. to make sure another part / switch / sensor isn't making the compressor lose power.

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The problem just might be that your are trying to use this unit at a time of season that is cold weather. there is no humidity in the air so the unit is cycling on and off .there by the noise you hear. dehums work best when the temp is 65 degrees or higher and the humidity level is 60% or higher. and that means outside. in order to have humidity the water has to be heated up to the point that it starts to evaporate.

Posted on Mar 28, 2008


Make sure your still with in 5yr. warrenty on the sealed system if so then call out a Whirlpool warrenty certified tech. to condem the compressor and to call into Whirlpool for a replacement and to pay for the service.

Posted on Feb 25, 2008


Lifeguard, there are generally no user accessible safety items in dehumidifiers. You are likely describing the start relay which is used to 'boost' the compressor on starting. Jumping it will not help you. It sounds like the compressor is defective. Economically, there is no justification for servicing these units unless they require refrigerant gas or if the fan motor has seized, something you can readily determine. If you don't hear the compressor hum when it should, there is no service procedure available for these sealed units.

Posted on Feb 23, 2008

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