Question about Refrigerators
Could be bad start/over load relay, or bad compressor. Try unplugging your frig for say 30 to 40 min then, with your hand on top of a cool compressor, plug the frig back in and see if compressor smoothly vibrates for at least 5 min without becoming very hot or shutting off even though fan continues to run. When the start/over load relay fails, it can apply power to both the compressors start coil AND it's run coil at the same time for to long and it very quickly causes and over load situation. I bet your "Starting Components" (start/over load relay) are bad. Any decent appliance parts store will have what you need. Just take in the make, model, and serial number of tour frig.
Posted on Oct 12, 2013
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Posted on Jan 02, 2017
There is normally an overload relay that protects the motor. If the motor is drawing more current than what is specified by the overload relay then it will trip. After that the bimetal will cool down and will attempt to start again. It is either that the motor is partially shorted (burned) or the starting capacitor is faulty. Before you condemn the compressor/motor (normally in one package), check or replace the starting capacitor. this can easily be done as the capacitor is readily acessible and has only 2 connections. If the capacitor is good, you can check the motor by measuring the resistance of the coil and resistance to ground. The motor coil should not be very low, maybe between 5 to 15 ohms, below that means that there is a short. Resistance of the coil to ground should be more than 500 megaohm, below that means the insulation is already compromised. If the motor/compressor is damaged, replacement will also require freon loading after motor replacement. It depends on where you are, there are places where the labor cost is so expensive that these appliances are not worth repaining anymore.
Posted on Jun 04, 2007
you need to do an amp draw with your meter,clamp the run wire on the compressor,you should get 2-5 amp reading,any higher means the compressor is going bad,also should be a locked rotor amp(LRA) reading on comp.-mike
Posted on Nov 04, 2008
SOURCE: Mini Fridge not working MCBR445
Compressor is in a locked up/ no start condition. the overload cools enough to reset and tries to start it again and kicks out on amp draw, then the whole cycle starts over again.
Posted on Jul 16, 2009
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