Jenn-Air Refrigerator Error Code F3E2

F3E2 indicates that the Freezer Compartment (FC) thermistor is not functioning correctly. The control board has detected that the sensor circuit is either open (broken) or shorted, meaning it cannot get a valid temperature reading from the freezer. Diagnosis involves running Test 02 and then checking resistance at HV Board connector P20 between pins 15 and 16.

The refrigerator may continue to run, but without a functioning freezer thermistor, the control system cannot accurately regulate freezer temperatures. This puts frozen food at risk of spoilage or inadequate freezing. It is best to address the fault promptly rather than continue relying on the appliance in this condition.

Resetting the refrigerator may temporarily clear the F3E2 code from the display, but the fault will return if the underlying problem with the thermistor or its wiring has not been corrected. A reset does not fix a failed sensor, damaged wiring, or a faulty board. Proper diagnosis and repair of the root cause are required to permanently resolve the error.

A knowledgeable DIYer can attempt to diagnose the issue by checking the wiring harness for damage and verifying that the connector at HV Board P20 is secure and corrosion-free. Replacing the thermistor is a relatively accessible repair if the sensor is confirmed faulty. However, if the HV board itself needs replacement, that is a more complex and costly repair that may warrant professional service.

If only the thermistor needs replacement, repair costs are typically modest, often in the range of $50 to $150 including parts and labor. If the wiring harness needs repair or replacement, costs may be somewhat higher. An HV board replacement is the most expensive scenario and could range from $200 to $500 or more depending on parts pricing and labor rates in your area.