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Robert, Need more info. I am unaware of a "light on the motor". There are three motors normally in a refrigeration system. The inside Evaporator fan motor that circulates air across the evaporator coil inside the box, the Condenser fan motor near the compressor that cools the freon after compression, and the compressor itself. Normally none of these have a light. If you are referring to the light inside the box that turns on with opening the door AND the frig is not cooling, we must go to the very start. 1. Verify power at outlet. 2. Do you see (or inside the box- hear) the two fans running. 3. Is the compressor smoothly vibrating?
Make sure your freezer(evaporator)fan and condenser fan(in the back of your refrigerator on the bottom next to the compressor) are both running.
Take off the back panel inside your freezer and look at your evaporator coils to see if they all have a thin layer of frost on them, if not, then its likely you have a bad compressor or a sealed system restriction.
It's usually caused by the condenser fan which
is underneath around back. If it's not running when the compressor runs it will
cause the problem you describe. You will need to remove the cardboard backing
on the back of the fridge to access the fan. Here's how to test the fan. http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php
For a refrigerator to work properly, it must have several things. First, it must receive power. Second, the compressor (underneath the refrigerator) must run. Third, the compressor fan (close to the compressor near the rear of the unit) must turn. Fourth, the evaporator fan (inside the freezer unit) must turn.
By motor, I assume you are referring to the compressor underneath the refrigerator. Close by the compressor toward the rear of the refrigerator, there should be a compressor fan. This should be turning. If it's not, the refrigerant coils will not be cooled adequately. This results in inadequate cooling inside the unit. Check also to make sure the coils are not covered with dirt and grime. If they are, clean them.
If the compressor fan is not turning, you will need to replace the fan motor.
For a refrigerator to operate properly, it must: 1) have power to it; 2) the compressor (underneath the unit) must run; 3) the compressor fan (close to the compressor) must turn; and 4) the evaporator fan (inside the freezer unit, usually behind an access panel) must turn.
You need to remove the fan and test it somewhere different. The compressor is in need of the condenser fan. Everything will overheat without that fan working. You should also test the power at thatpin plug. Let me know what you find. Sea Breeze
what you need to check is the thermoistat beccause the inside fan runs all the time and the only thing that turns on the compressor and the oiutside fan is the thermostat.
This is a Sub Zero and many technicians do not realize that these units most all run on 2 separate systems. 2 cold controls 2 compressors 2 evaporators. They share a condenser and condenser fan motor. What you are describing is most likely a bad cold control. It is pretty common for these to get some age and go bad. If you are very savvy with repairs yourself then if you access the compressor area and feel that the compressor on the right is cool and the compressor on the left is warm then you know that the ref. compressor has not been running. UNPLUG THE UNIT OR CUT THE BREAKER OFF. Remove the shelving from the fresh food section and the cover to the lights and the panel below the lights and lean the back panel forward to access the cold control. You will see 3 wires to the cold control. The green wire is the ground wire of corse. Unplug the other 2 wires remembering their location on the control unit. Take a jumper wire and jump these 2 wires. If when you power the unit up the right side compressor comes on then you know that your fresh food cold control is bad. Replace fresh food cold control.
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