F2
Rowenta
Humidity Sensor Failure or Out-of-Range Reading
Humidifier shows F2 and stops producing mist, fan may still run.
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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 humidity sensor, sensor wiring harness damage, sensor connector loose on PCB, contaminated sensor element
How to Fix / Troubleshooting
Safety: Unplug the unit before opening any covers.
- Reset the unit: Unplug for 10 minutes, then plug back in and test. Sometimes F2 clears after a full power cycle.
- Check room conditions: Avoid placing the humidifier directly in the path of steam, near open windows, or in bathrooms where condensation can saturate the sensor.
- Clean sensor area: Locate the humidity sensor grill (usually near the air intake or control panel). Use a soft brush or compressed air to remove dust. Do not use water or cleaning chemicals on the sensor.
- Inspect wiring: If accessible, verify the small sensor harness is firmly connected to both the sensor board and the main PCB.
- If F2 persists: The humidity sensor module likely needs replacement. This is a low-voltage component but requires opening the cabinet; if unsure, contact a technician.
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Repair Difficulty
Medium
3/5
Required Part
Humidity Sensor Module
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