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Just so I am clear outside under the access panel there should be a small black box about 2" by 4" normally it is clipped to the coils. It is a high temp sensor and was part of a recall. When the led is ON it locks the fridge out and you might get the NO CO code. So it is important to know if you have that or not and if you do is the light on....
IF the red light is on sometimes running a magnet over the box will reset it.... Click HERE and have a look....
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