F1Warning
Haier Oven/Range F1 Error Code
The oven temperature sensor has failed or is out of range, causing inaccurate temperature readings.
Common causes
- Faulty oven temperature sensor (RTD)
- Loose or damaged sensor wiring
- Control board issue
How to fix it
- Unplug the oven or turn off the circuit breaker.
- Remove the oven back panel to access the temperature sensor.
- Check sensor connector for loose or broken wires; reseat if needed.
- Measure sensor resistance with a multimeter (should be ~1090 ohms at room temp). If out of range, replace sensor.
⚠ When to call a pro: If sensor resistance is normal and wiring intact, the control board likely needs replacement.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.