F2 — Outdoor coil temperature sensor error

What does F2 mean?

The system has detected an issue with the outdoor coil temperature sensor (T3). This sensor helps regulate the unit's performance based on outdoor conditions.

• Faulty outdoor coil temperature sensor (T3)
• Loose connection between the sensor and the main control board

Click steps to track your progress.

1. 1

   Verify that the connections between the outdoor coil temperature sensor and the outdoor unit main control board are secure.

2. 2

   Check the resistance value of the outdoor coil temperature sensor against the specifications in the manual.

3. 3

   If the sensor resistance is not within the normal range, replace the sensor.

4. 4

   If the sensor resistance is normal, replace the outdoor main control board.