F2
Tosot
Indoor Evaporator Temperature Sensor Fault
Indoor unit displays F2, unit may shut down or run erratically
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Possible Causes
Open or shorted evaporator coil sensor (T1), Loose or corroded sensor connector, Sensor dislodged from coil surface, Damaged sensor harness
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the front cover.
- Access the coil: Remove the front panel and filters to expose the evaporator coil.
- Locate sensor: Find the T1 sensor clipped to the coil tubing. Ensure it is firmly attached and not hanging loose.
- Check wiring: Trace the sensor wires back to the PCB and reseat the connector.
- Replace sensor: If F2 persists, replace the evaporator temperature sensor with the correct Tosot part.
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Repair Difficulty
Easy
2/5
Required Part
Indoor Evaporator Temperature Sensor (T1)
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