Oven displays F3 and does not heat correctly.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Shorted sensor, Damaged sensor cable insulation touching chassis, Moisture in sensor connector, Faulty control board input

Safety first: Isolate power and allow the oven to cool before accessing the rear panel.

Inspect sensor wiring: Check the sensor harness for crushed or melted insulation where it passes through the oven cavity.
Test sensor resistance: Disconnect the sensor and measure resistance. A very low reading (near 0 Ω) indicates a shorted sensor.
Replace sensor if shorted: Fit a genuine Montpellier sensor and route wiring away from hot surfaces.
If sensor tests normal: The control board’s sensor input circuit may be shorted and require replacement.

Medium 3/5

Oven Temperature Sensor (Probe / NTC)

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