Upper lamp blinks 5 times — Outdoor Power System Error

What does Upper lamp blinks 5 times mean?

The upper lamp on the indoor unit blinks five times, indicating a problem with the outdoor unit's power system. The compressor has stopped due to overcurrent protection or start-up failure protection three consecutive times within one minute after starting.

• Compressor overcurrent protection activated
• Compressor start-up failure protection activated
• Outdoor unit stop valve is not fully open
• Insufficient or unstable power supply to the outdoor unit

Click steps to track your progress.

1. 1

   Ensure all outdoor unit stop valves (typically on the refrigerant lines) are fully open.

2. 2

   Check for any obstructions around the outdoor unit that might restrict airflow or cause overheating.

3. 3

   Turn off the air conditioner at the main power supply breaker.

4. 4

   Wait for a few minutes (at least 5 minutes) before turning the main power supply back on.

5. 5

   If the error recurs, contact a qualified service technician to inspect the compressor and outdoor power system.