Hello
On a no cool symptom only in the refrigerator section there are a few things to check.
1) Make sure both doors are closing properly and the door seals are magneticly sealing 100% around both doors.
2) 1.Verify the evaporator fan is moving air (Note: the fans do not run with the doors open)
3) Verify the fridge Thermistor is reading between 2.4 and 2.8 volts DC at the main PCB.
4) Check the wiring harness for poor connections.
5) Access Forced Operation Mode and turn on the defrost heater. You should hear the relay(s) click when activated. Verify the 12v supply to the relays and the defrost heater(s).
6) Verify the continuity of the bimetal and/or thermal fuse in the defrost circuit.
7) Verify the Compressor Fan is dissipating heat properly.
8) Check the operation of the defrost circuit, especially the defrost sensors and bimetal elements. Verify the defrost heater is not turning off to early.
9) Check the freezer defrost sensor feedback line by measuring the voltage level at the Main PC Board (normal 3.6- 3.9Vdc).
See complete diagnostic manual link below. Go to page #265 for further diagnostics. Matt Ace technician
- AV Repair Help answered 7 years ago
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