F2
Midea
Temperature Sensor / Thermistor Fault
Microwave shows F2; may not heat or may stop mid-cycle.
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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.
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Possible Causes
Open or shorted cavity thermistor, Damaged sensor wiring harness, Faulty connection at control board, Failed sensor input circuit on PCB
How to Fix / Troubleshooting
Safety first: Unplug the microwave before removing the cabinet.
Step-by-step checks (experienced DIYers):
- 1. Locate sensor: Remove the outer cabinet and locate the cavity temperature sensor or thermistor, usually mounted on the cavity wall or top.
- 2. Inspect wiring: Check the sensor harness for cuts, burns, or loose connectors. Reseat the connector at both the sensor and control board ends.
- 3. Test sensor: Disconnect the sensor and measure its resistance with a multimeter at room temperature. Compare to the value specified in the service manual (typically in the tens of kilo-ohms). An open or shorted reading indicates a bad sensor.
- 4. Replace sensor: Install a new OEM Midea cavity thermistor or sensor if defective.
- 5. If F2 persists: The control board sensor circuit may be faulty and require board replacement.
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Repair Difficulty
Hard
4/5
Required Part
Cavity Thermistor / Temperature Sensor for Midea Microwave
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