F2
Hisense
Secondary Temperature Sensor Fault (Auxiliary NTC)
F2 error appears during operation; cooker may stop unexpectedly.
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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
Failed auxiliary NTC sensor (e.g., sidewall sensor), Broken sensor wiring, Loose connector on PCB, Sensor dislodged from mounting point
How to Fix / Troubleshooting
Safety first: Unplug and cool the cooker before opening the housing.
- Locate auxiliary sensor: Remove the outer shell to find the secondary NTC sensor, often attached to the side of the inner pot housing or chassis.
- Inspect wiring: Check the two-wire harness for damage or disconnection. Reseat the connector on the PCB.
- Check mounting: Ensure the sensor is firmly clipped or screwed to the metal surface; a loose sensor can read incorrectly.
- Test resistance: Measure the sensor’s resistance at room temperature and compare with the main NTC. Replace if open, shorted, or significantly different.
- Reassemble and test: After replacement, reassemble the housing and run a short program to confirm the error is cleared.
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Repair Difficulty
Hard
4/5
Required Part
Auxiliary NTC Temperature Sensor
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