Haier Refrigerator Error Code F2 — Ambient Temperature Sensor Error
What this means
Error code F2 on Haier refrigerators indicates the ambient temperature sensor (the sensor that reads the room temperature outside the refrigerator) has returned an abnormal reading. The control board uses this data to adjust compressor run times based on the environment. A faulty ambient sensor can cause the refrigerator to overcool, undercool, or run continuously. This sensor is typically mounted on the main control board or near the condenser area.
Step-by-step fix
3 stepsReset the refrigerator
Unplug for 10 minutes and plug back in. If F2 clears and does not return, it was a temporary sensor glitch.
Ambient sensor errors sometimes appear when the refrigerator is in a very hot or very cold location (garage, unheated porch) outside its designed operating range.
Locate and test the ambient sensor
The sensor is usually at the back of the refrigerator near the control board or on the exterior of the cabinet. Disconnect and measure resistance — expect approximately 10,000 ohms at 72°F room temperature.
If your refrigerator is in a garage with temperature extremes, the sensor may be reading correctly but the environment is outside the unit's specifications.
Replace the sensor if faulty
Remove the old sensor, install the replacement, and reconnect. Plug in and monitor for 24 hours.
Some Haier models have the ambient sensor built into the main board — in that case, the entire board may need replacement.
When to call a professional
If the sensor is integrated into the control board, professional replacement is recommended.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Ambient Temperature Sensor
Part #RF-4985-40 · $10–$20
If sensor reads abnormally at room temperature
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.