Maytag Refridgerator Commpressor kicking thermal...

Question

condenser is clean fan is working but unit kicks out the internal thermal overload every 10 days or so.Have to unplug unit for approx. 2hrs. and when compressor is cool to touch it will run fine for 10-14 days until it happens again.I am heating A/C tech. with universal license and this is my home unit,however, my field of work normally does not include appliances,being my own unit I would love some help in diagnostics. Thanx Jamie