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The compressor overheating could be due to a failing compressor, poor voltage to the appliance (like could be caused by running it on an extension cord) or depending on the type of compressor used in it, possibly a problem with the compressor starting device and/or compressor capacitor ... if used.
A thermostat problem could not cause the compressor to overheat.
Dan O.
Appliance411.com
The Appliance Information Site
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