OPERATION INDICATOR lamp blinks 5 times (Pattern A) - Abnormal high pressure / Overheating protection operation

What does 5 mean?

The OPERATION INDICATOR lamp blinks five times in 'Output pattern A' from the indoor unit. This signifies an abnormal high pressure situation or that the overheating protection has activated.

• Abnormal high pressure (63H switch activated).
• Overheating protection operation.

Click steps to track your progress.

1. 1

   Check if indoor/outdoor units have a short cycle on their air ducts that could lead to overheating.

2. 2

   Check if the heat exchanger and filter are clean and not dirty or clogged.

3. 3

   Ensure the connector (63H) on the outdoor controller board is not disconnected.

4. 4

   If the issue persists, consult a qualified technician to inspect the refrigerant system and pressure switches.