We have a GE Monogram built in refrigerator with bottom freezer. The model number is ZICS360NMARH. The freezer compartment is working fine, and stays at 0 degrees or below. The fresh food compartment is too warm though, and won't go below 48 degrees, no matter how low I set the controls at. I have checked cold air in and warn air return vents and they are not blocked by frost. The cold air damper operates correctly. The evaporator fan spins whenever the door is closed. The evaporator coil is clean and not blocked by frost or ice. When testing the thermistors in diagnostic mode, one of the 5 tests returned a "Fail" code, and that's test number 3, which the service manual says is "Custom Cool". However, I don't know what is custom cool and where it is located. The manual says number 1 and 2 are thermistors in the fresh food compartment, number 4 is the thermistor on the evaporator, and number 5 is the thermistor in the freezer compartment. But where is number 3? The service manual does not say what the custom cool is and where it is located. It lists only 4 thermistors total in the entire fridge, but there are 5 tests in the "thermistor test". On the circuit board diagram, the 2 fresh food thermistors, the evaporator thermistor, and the freezer thermistor are all listed. But there is another thermistor listed as "QuickChill thermistor". I suspect that this the number 3 I am looking for. But where is it? How do I test it to confirm it is bad? And how to replace it? Thanks very much for your help!
Answer Hello Bob,
From the wiring diagram for your model number, you do not have the Quickchill option on your unit. Since the manufacturer will make a board work on multiple models, the part failure will show up when the test for a non-existent part is tested through the board. I would make sure that the evaporator fan motor will start back up by itself if stopped by the blade. If it starts slowly or has to be bumped to start, the fan motor is not moving the air sufficiently.
Part 7327, is this the defrost thermostat ?
Answer Hello George! Yes, item 7327 part number WR50X10003 is the thermostat. Thanks!