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Anonymous Posted on Jun 23, 2008

High cool not working

The low cool and low fan works but high cool and high fan does not work at all. I can here a humm on the roof if I try to turn it on.Whats uo

  • gitzit1 May 11, 2010

    Do you think it could be a fan capasitor? or is it even worth trying it.

  • Anonymous Mar 22, 2014

    modle#MGHOO55B THE FAN BOWS FOR ABOUT 20 MIN. THEN CUTS OFF AND THE UNITE DOSE NOT TRY TO COOL AND THE LINE DOES NOT FREEZE UP LIKE ITS OUT OF FREON

×

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  • Master 828 Answers
  • Posted on Jun 28, 2008
Anonymous
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Joined: Apr 28, 2008
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Compressors on these units runs at only one speed. The change to high cool is only a change in blower speed moving air faster over the cooling coil. I would have the running capacitor for the fan motor checked. A bad capacitor can cause your type of problem. The other problem could be that the high speed winding in the fan motor is bad. Try it operation in the fan only position through the two speeds. If it works in the low and high speed for fan only your problem could be in the selector switch.

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