P6 - Abnormality of coil frost/overheating protection modes

What does P6 mean?

An abnormality has been detected in the coil frost or overheating protection modes. This indicates the system is either freezing up or overheating, and its safety mechanisms are not functioning correctly.

• Refrigerant imbalance (too low or too high).
• Blocked airflow over the indoor coil.
• Faulty temperature sensors.
• Dirty indoor evaporator coil.

Click steps to track your progress.

1. 1

   Turn off the unit and inspect the indoor coil for ice buildup. If iced, allow it to thaw completely.

2. 2

   Check and clean the indoor unit's air filters.

3. 3

   Ensure nothing is blocking the airflow to the indoor unit.

4. 4

   If the error persists, contact a qualified HVAC technician to check refrigerant levels and sensor function.