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You have a defrost problem. A blockage of frost in the freezer prevents air flow over the cooling coils there, allowing very cold air to migrate back into the bottom of the refrigerator section. Unload the freezer and remove the back wall, melt the frost off the coils with a hair blower, and check to see if the defrost heater at the bottom of the coils is burnt out. If heater is OK, replace the 1.5 inch long white thermistor located at the very top of the cooling coils.
If the coils are still freezing up , you should replace the defrost thermostat . This is a 1 " cylinder , clipped on the top of the freezer coils , with 2 wires going to it . This is assuming the defrost heated is good .
Replace the overload/relay . Part number 67005560 . You will need to pull the refrig out and remove the bottom panel . This piece , plugs onto the compressor , with 2 or 3 wires attached to it . You can easily replace . While back there , you may want to clean the "square" coils , of dust , lint , etc .
Sound as though you need a defrost timer that is located around temp control and light in fridge side.If it is faulty it will not go into a defrost making the freezer ice up and cause alot of trouble.hope i helped thanks:)
Frost on the coils won't allow air to pass to the fresh food section, thus resulting in insufficient cooling. To eliminate this problem, you will have to get a new adaptive defrost timer ( small board ), and a defrost heater assembly.
You likely have a defrost cycle failure. The freezer's cooling coils need to be frosty and cold so the air that the fan pulls over them can cool the fridge section. If the defrost cycle fails, the coils freeze up to a block of ice and air flow suffers (fridge is about 55 degrees F). The freezer stays cold only because there's a block of ice in there now... sometimes that cold "sinks" to the bottom and only the food at the bottom stays frozen (and can even freeze food at the bottom of the fridge compartment while the rest is warm). To be sure, you'll need to take the rear interior panel off the freezer back wall and check the coils to see if they are frozen solid. If they are then there's a defrost cycle failure. If they are showing a nice white frosty pattern evenly all over the coils then that's normal and maybe the evap fan (right above the coils) is not blowing air up properly or is not working at all. That fan should run if the compressor is running, etc. the only time it doesn't run is during an actual defrost cycle. Once you find out what condition the coils are in it should be simple to direct you further on the problem.
smae problem,checked defrost coil ok
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