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Question about Haier HDN655E Dehumidifier

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Haier HDN655E unit runs but compressor won't kick in

I have a Haier HDN655E that worked well for over a year but lately I've been having problems with it where the unit turns on and the fan blows but the compressor will not kick in. I've set the desired humidity anywhere between 30-50 and it shows the current humidity around 60-70 but the compressor will not engage and dehumidify the air. I've opened it up and don't see any loose wires or anything but I don't know what to look for and I can't find any service manual for the unit. Any help is greatly appreciated. Thanks in advance!

Posted by bryqqer on

  • bryqqer Aug 21, 2007

    When I closed the unit back up after inspecting for loose wires, etc, the compressor began working. Either something was loose or it just needed time to sit while powered off. What I've noticed is that it will work fine under normal routine (it runs, tanks fills and it shuts off, I empty/replace tank, it runs fine again). However, if I power it off or unplug/move it and try to start it again later, the compressor won't kick in no matter what I do. Hopefully it was just a loose wire. I really wish I had a service manual for this unit so I could understand what I'm looking at when I take it apart. Would make troubleshooting much easier.

  • Anonymous Mar 29, 2008

    Fan continues to run all the time



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Use a jumper cord and go directly to the compressor to see if it will run. if it don't run, open up the motor box and see if there is a klixon overload inside. this should be normally closed. if it isn't replace it. the klixon is a thermal overload cutout. it usually trips because of high winding temperatures and protects the motor inside. the compressor is a hermetically sealed unit. no, or little freon will cause the motor to overheat.

Posted on Aug 21, 2007


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