F03
Hotpoint-Ariston
Freezer Compartment Temperature Sensor Error
Error F03; freezer temperature reading is clearly wrong (e.g., shows -18°C but food is soft).
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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 or open freezer NTC sensor, Sensor wiring harness damaged, Corroded connector at control board
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing sensor wiring or control board.
- Compare with thermometer: Place an accurate freezer thermometer inside and compare to the displayed temperature. Large discrepancies support a sensor fault.
- Inspect sensor: Locate the freezer NTC (often behind a small cover on the rear wall). Check for physical damage or ice encasement.
- Defrost if iced: If the sensor is buried in ice, perform a full manual defrost and then recheck operation.
- Check connections: Follow the sensor wires to the connector and to the control board. Ensure all connections are tight and corrosion-free.
- Replace NTC: If the error persists, replace the freezer NTC sensor with the correct Hotpoint-Ariston part.
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Repair Difficulty
Medium
3/5
Required Part
Freezer NTC Temperature Sensor
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