Electrolux Oven Error Code F3

The F3 error code on an Electrolux oven signals a problem within the oven probe circuit, which is responsible for monitoring oven cavity temperature. The primary component involved is the RTD (Resistance Temperature Detector) sensor probe, a device whose electrical resistance changes predictably with temperature. The control board reads this resistance to determine oven temperature, and when the resistance falls outside expected parameters, it triggers the F3 fault. Sub-code F31 specifically indicates an open condition in the RTD probe or its wiring, meaning the circuit has no continuity.

There are several distinct failure modes grouped under F3. An open RTD probe or wiring break prevents the control from receiving any temperature signal. A shorted RTD probe, where resistance drops abnormally low, sends false temperature readings. Abusive operation, such as running extended self-clean cycles or exceeding normal temperature limits, can cause the safety thermostat to open as a protective measure, which also triggers this code. A stalled cooling fan is another recognized cause, as inadequate cooling can push internal temperatures to unsafe levels.

Diagnosing F3 requires checking RTD resistance at room temperature and comparing the reading against the probe resistance chart for the specific model. A mismatch confirms a failed probe. Wiring harness continuity between the probe and control board should also be inspected for breaks or loose connections. If the oven was recently used heavily or ran a self-clean cycle, allowing the unit to cool completely before restarting may clear the code if the safety thermostat tripped. The cooling fan should be inspected for physical obstructions or motor failure.