Error code · Haier
F4 · Freezer compartment sensor fault
The freezer compartment sensor has a fault, which may affect cooling. A professional service engineer should be called to check the appliance.
Fridge freezerCaution — Know When to StopFixLens verified
Safe first steps
- Check the temperature settings of the freezer compartment to ensure they are set correctly.
- Inspect the freezer compartment for any visible ice buildup or obstructions that may affect the sensor.
- If the sensor appears to be damaged or the issue persists after checking the settings and obstructions, arrange for a professional service visit.
When to stop
- Stop if the freezer compartment is excessively cold or if you notice any unusual noises — risk of component damage.
Likely cause
The freezer compartment sensor has a fault, which may affect cooling. A professional service engineer should be called to check the appliance.
Verification
Reviewed by: automated manual extraction
Verified against Haier HB50T618FMK technical documentation
FixLens publishes its own structured technical logic verified against Haier HB50T618FMK documentation · last verified April 23, 2026.
Official manufacturer support