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the fan in the freezer is running, frost on the back wall inside the freezer and the fridge side is cool/warm. what could be wrong?
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Originally Posted by: Frankie_Z  the fan in the freezer is running, frost on the back wall inside the freezer and the fridge side is cool/warm. what could be wrong? Frankie, There are a couple of things to check. Remove the freezer back wall so you can access and circuit test the defrost heater Part number: AP3183311
, thermistor Part number: AP3185407
and evaporator fan motor Part number: AP3875639
You'll want to make sure the fan motor is running at the high speed, this style motor can get "stuck" at a low speed, and not circulate the air properly.The evaporator thermistor should have a resistance of 4 to 5000 ohms resistance at room temperature, and the heater should have a resistance of 18 to 20 ohms resistance across the two terminals. We presume you've already done the basic checks, doors are closing and sealing, the dispenser flapper is closing and sealing, and no articles are blocking or re directing the air flow.
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Rank: Member
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so i tested heater and it is bad. tested thermistor good. how do you test if the fan is high or low....
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Rank: Advanced Member
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Joined: 7/14/2010(UTC)
Posts: 5,222
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Originally Posted by: Frankie_Z so i tested heater and it is bad. tested thermistor good. how do you test if the fan is high or low.... Frankie, Most experienced people can tell the speed of the fan by sound or feel. You probably can too, but at the evaporator fan motor harness, you should have a reading of 12.5 VDC, if the motor is running in the "high" speed setting, and 8 VDC if the control is running the fan in the "low" speed. You'll be checking across the White and Yellow wires in the connector, and make sure you set the meter to read DC volts. Chances are you'll only need the heater, but this way we're sure everything else is proper, and you shouldn't have any issues for a while. Thanks,
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