Etna
Unstable Temperature Control
Oven temperature fluctuates widely, food sometimes burns and sometimes undercooks in same setting
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Safety Warning
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.
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Possible Causes
Intermittent temperature sensor, loose sensor connection, failing main PCB control circuit, poor door seal
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing the sensor or control board.
- Sensor wiring: Inspect the NTC sensor wiring from the cavity to the PCB for loose connectors or intermittent breaks. Reseat all plugs.
- Wiggle test: With the oven running (only if safe and qualified), gently move the sensor harness and observe if temperature readings jump. If so, repair or replace the harness.
- Door seal: Replace a worn gasket that allows heat to escape, causing the control to overshoot.
- Control board: If sensor and wiring are stable, the main PCB’s control algorithm or components may be failing. Replace the main PCB.
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Repair Difficulty
Medium
3/5
Required Part
Oven Temperature Sensor (NTC Probe)
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