Left/Upper lamp blinks 7 times with a 2.5-second pause — Outdoor control system fault

What does Left/Upper lamp blinks 7-time blink, 2.5-second OFF mean?

The system cannot properly read data from the non-volatile memory of the outdoor inverter P.C. board or the outdoor electronic control P.C. board.

• Cannot read data from outdoor P.C. board memory
• Faulty outdoor inverter P.C. board
• Faulty outdoor electronic control P.C. board

Click steps to track your progress.

1. 1

   Refer to the outdoor unit's service manual for detailed troubleshooting.

2. 2

   Check for any visible damage to the outdoor P.C. boards.

3. 3

   Replacement of the inverter P.C. board or outdoor electronic control P.C. board may be necessary.