Question about Heating & Cooling
More than likely it's the fan motor's bearings running dry.
For the past several years the mfc's have been installing 'oil-less' motors in most window units (in order to sell more units/motors of course) - but there's always a chance your motor can be oiled, so I would check it out and see if there's a place to put oil in - sometimes there will be a plastic stopper in the hole (on the motor) and all you have to do is pull it out and add oil. Note: look for a place on both sides of the motor to oil.
If by chance you don't have a place to oil the motor, you can always try drilling a hole on top of the bearing(s) - (which I've done with moderate success in the past) and then squirt oil in the hole you drilled.
All of this is assuming it is your fan motor (most likely cause) - but there could always be something else, as in the compressor bearings - in which case you can't do anything about - but I would bet it's the fan motor.
hope this helps
Posted on Jul 05, 2010
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Posted on Jan 02, 2017
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Is it possible that some spray cleaner got into the controls?
I always recommend that users spray cleaner on a soft cloth then wipe the control panel.
Otherwise, the spray can get into the controls and lock it up or make it act odd.
If it does not dry out over itme, it may need to be manually dried or blown out.
But the keypad or control unit may be damaged.
Please post back with more details so we can help further.
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