F2
Klarstein
Evaporator Low-Temperature / Frost Sensor Error
Display shows F2 and cooling stops; defrost or protection mode may activate.
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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
Defective evaporator frost sensor, sensor not attached to coil, wiring damage, main PCB fault
How to Fix / Troubleshooting
Safety: Disconnect power before accessing the evaporator.
Steps:
- Check for ice: Remove the front cover and inspect the evaporator coil. If heavily iced, allow it to fully defrost with the unit off and doors/windows open.
- Sensor position: The frost sensor should be clipped to the evaporator tubing or fins near the inlet. Reattach securely if loose.
- Wiring: Inspect the sensor cable for damage and reseat the connector on the PCB.
- Resistance test: Compare resistance to expected NTC values. Replace the sensor if readings are abnormal.
If F2 persists with a good sensor and no icing, the main PCB may misread the sensor and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Evaporator Frost NTC Sensor
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