Ariston Thermostat or Sensor Misregulation

Oven overheats and burns food even at low temperature settings; no error code

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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

Shorted temperature sensor, Stuck-closed mechanical thermostat (older models), Faulty control board temperature regulation, Sensor not in correct position

How to Fix / Troubleshooting

Safety first: Disconnect power if the oven overheats uncontrollably.

  • Check with thermometer: Use an oven thermometer to confirm that the actual temperature is higher than the set temperature.
  • Inspect sensor: Verify that the cavity sensor is firmly mounted and not pushed into insulation. Replace the sensor if resistance is out of specification.
  • Mechanical thermostat (if fitted): On older Ariston ovens with a rotary thermostat, test continuity; it should open when the oven reaches set temperature. Replace if it remains closed.
  • Control board: If sensor and thermostat are good, the control board may be misregulating. Replace the main PCB.
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Repair Difficulty

Hard 4/5

Required Part

Cavity Temperature Sensor or Thermostat
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