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I posted earlier with this problem, but have more detail now.
Ran through the manual steps in diagnostic mode and all sensors good, heating element warms up (quickly), compressor on/off, etc. The thermostat on the evaporator line is closed when frozen. The evaporator coils keep freezing up, so I am assuming the defrost timer is not working?
Fridge and freezer are both cooling appropriately, the compressor cycles, but the airflow from the evaporator drops when the coils freeze up. I can manually do a defrost cycle and the coils will stay clear for a day or so.
Help?
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Originally Posted by: jlflemmons  I posted earlier with this problem, but have more detail now.
Ran through the manual steps in diagnostic mode and all sensors good, heating element warms up (quickly), compressor on/off, etc. The thermostat on the evaporator line is closed when frozen. The evaporator coils keep freezing up, so I am assuming the defrost timer is not working?
Fridge and freezer are both cooling appropriately, the compressor cycles, but the airflow from the evaporator drops when the coils freeze up. I can manually do a defrost cycle and the coils will stay clear for a day or so.
Help? jlflemmons, Great description and diagnosis. You do have a defrost issue and the only components not tested is the defrost timer. But then you don't have a defrost timer ! You'll need to replace the electronic control board Part number: AP3859538
It's located inside the compressor compartment on the left side of the cabinet.
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