F4: Outdoor coil temperature sensor malfunction (20k)

F4 TROUBLESHOOTING STEPS:

1. Verify the Temperature Sensor:

   • Inspect the outdoor coil temperature sensor (20k) for any visible damage.

   • Ensure the sensor is securely connected and properly positioned on the outdoor coil.

2. Examine the Outdoor Board:

   • Check the outdoor board for any indications of malfunction related to the coil temperature sensor.

   • Confirm proper wiring and connections on the outdoor board.