F9Warning
Haier Oven/Range F9 Error Code
The oven temperature sensor circuit has an intermittent or out-of-range reading.
Common causes
- Intermittent sensor connection
- Faulty sensor
- Control board issue
How to fix it
- Unplug the oven.
- Check sensor connector for corrosion or loose pins.
- Measure sensor resistance; replace if out of spec.
- Check continuity of wiring from sensor to control board.
⚠ When to call a pro: If sensor and wiring are good, 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.