E12
Fairland
Defrost Sensor Fault / Coil Temperature Sensor Error
Display shows E12; unit may start but quickly stops, especially in cold or damp weather.
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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
Failed evaporator coil sensor, Sensor not properly attached to coil, Damaged sensor cable, Corroded connector at PCB
How to Fix / Troubleshooting
Safety: Disconnect power before accessing the coil area.
Steps:
- Locate coil sensor: On Fairland heat pumps, the defrost/coil sensor is usually clipped to the refrigerant coil tubing or fins.
- Check attachment: Ensure the sensor is firmly clipped and making good contact with the coil surface.
- Inspect wiring: Follow the sensor lead back to the PCB, checking for damage or loose plugs.
If E12 persists:
- Replace the coil temperature sensor with a Fairland-compatible NTC sensor.
- A technician should verify correct defrost operation after replacement.
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Repair Difficulty
Medium
3/5
Required Part
Coil Temperature Sensor (Defrost Sensor)
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