Dacor Range Error Code F10

The F10 error code on a Dacor range indicates one of two related issues: a shorted element relay on the power board, or a fault in the oven temperature sensing circuit. The power board contains relays that control power delivery to the baking and broiling elements. When one of these relays shorts internally, it can cause uncontrolled heating or an inability to regulate temperature, which the control system detects and flags with the F10 code. A shorted relay is a hardware failure within the board itself and cannot be repaired at the component level; the entire power board must be replaced.

The second cause involves the oven temperature sensor and its associated wiring. The sensor is a resistance-based device (typically an RTD type) that changes its electrical resistance in proportion to oven temperature. If the sensor develops an intermittent fault, if its resistance readings fall outside the expected range, or if the wiring connections at the sensor or control board become loose or corroded, the control system may interpret the erratic signal as a fault condition and trigger F10. Loose connections are a common contributor because vibration over time can loosen terminal crimps.

Diagnosing F10 correctly requires determining which of the two causes is present. Inspect the sensor wiring harness first, checking that all connectors are fully seated and free of corrosion or heat damage. If wiring is secure and the sensor reads outside its normal resistance range at room temperature, replace the sensor. If the sensor and wiring check out but the error persists or elements run without control, the power board relay is the likely cause and the board should be replaced.