F20 / Outdoor LED1 flashes 5 times — High pressure protection

What does F20 mean?

The system has detected excessively high pressure, activating a protective shutdown to prevent damage to the refrigerant system and compressor.

• Outdoor pipe temperature sensor issue
• Outdoor PCB issue

Click steps to track your progress.

1. 1

   Ensure the outdoor unit is clear of any obstructions that might block airflow to the coils.

2. 2

   Clean the outdoor unit's coils if they are dirty, as this can lead to high pressure.

3. 3

   Turn off the unit at the main power switch, wait 10 minutes, then restart.

4. 4

   If the problem persists, contact a qualified technician to check refrigerant levels and system pressure.