F2
Koldfront
Evaporator Sensor Calibration / Range Fault
Display shows F2 and unit may shut down or fail to cool properly.
Advertisements
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.
Advertisements
Possible Causes
Evaporator thermistor out of range, sensor not in correct position on coil, wiring resistance causing incorrect readings, defective control board input
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing the evaporator coil.
Steps to troubleshoot F2:
- 1. Access evaporator: Remove the front cover to expose the indoor coil.
- 2. Verify sensor placement: Ensure the evaporator thermistor is firmly clipped to the coil tubing where the manufacturer placed it, not hanging loose.
- 3. Inspect wiring: Check for splices, corrosion, or damage along the sensor leads. Reseat the connector at the control board.
- 4. Compare resistance: If possible, compare the evaporator sensor resistance to a known-good sensor at the same temperature.
- 5. Replace sensor: Install a new Koldfront evaporator thermistor if readings are out of spec or F2 persists.
- 6. Control board: If a new sensor does not clear F2, the control board’s sensor circuit is likely faulty and needs replacement.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Evaporator Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements