Dacor Range Error Code F3

F3 on a Dacor range indicates a shorted oven sensor alarm. The Electronic Range Control has detected a short circuit in the oven temperature sensor circuit across 16 consecutive temperature readings. This code only appears while a cooking operation is active. It signals that the sensor or its wiring is not functioning correctly and needs inspection.

You should not continue using the oven while the F3 code is active. A shorted temperature sensor means the ERC cannot reliably monitor or regulate oven temperature, which can result in overheating or unpredictable temperature behavior. It is best to avoid oven use until the sensor and wiring have been inspected and the fault resolved.

Disconnect the oven temperature sensor from its wiring connector and use a multimeter set to measure resistance (ohms) across the two sensor terminals. A properly functioning sensor will show a specific resistance value at room temperature consistent with the sensor type installed in your model. An extremely low resistance reading near zero ohms confirms an internal short circuit in the sensor, meaning the sensor needs to be replaced. If the sensor reads correctly, shift your inspection to the wiring harness and connector between the sensor and the ERC.

Pressing the Cancel key is the correct first step and may clear the alarm temporarily. However, if the underlying short circuit in the oven sensor or wiring is not corrected, the F3 code will return the next time a cooking operation is started and the ERC accumulates 16 consecutive faulty readings. A lasting fix requires diagnosing and repairing the sensor or wiring fault.

Repair costs vary depending on the root cause. An oven temperature sensor replacement typically costs between $20 and $80 for the part, while professional labor can add $75 to $200 depending on your location and service provider. If the ERC board itself is at fault, parts and labor combined can range from $200 to $500 or more. A wiring repair by a technician generally falls in the lower to mid portion of that range.