Temperature sensors monitor the internal environment of your fridge freezer and tell the control system when to start or stop cooling. When a sensor fails, the appliance can become too warm, too cold, or behave unpredictably.
Signs of sensor failure
- Fridge or freezer temperatures fluctuate wildly
- Compressor runs constantly or not at all
- Ice builds up in the freezer unexpectedly
- Food spoils despite correct thermostat settings
Common causes
Wear and tear
Over time, sensors degrade, leading to inaccurate readings.
Electrical faults
Loose connections, corrosion, or damage can interrupt the signal between the sensor and control board.
Environmental factors
Excessive moisture, temperature shocks, or impact can damage sensors.
Repair options and costs
- Sensor replacement: £60–£150
- Control board testing or replacement if sensor failure affected system: £150–£300
Related problems
- Fridge not cooling properly
- Fridge freezer temperature fluctuations
- Fridge freezer thermostat problems
Get a repair quote
Qualified engineers can test and replace sensors safely to restore consistent cooling and protect your food.
Visit our homepage to get free local repair quotes.