Left/Upper lamp lights up — Outdoor unit does not operate, potential memory issue

Was bedeutet Left/Upper lamp lights up ?

The outdoor unit does not operate because the system cannot properly read data from the non-volatile memory of the inverter P.C. board.

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

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1. 1

   Check the blinking pattern of the LED on the inverter P.C. board for more information.

2. 2

   The outdoor unit's service manual may provide further diagnostic steps.

3. 3

   Replacement of the inverter P.C. board might be required.