Hitachi PC-ARH Manuel D'installation Et De Fonctionnement page 14

Alarm Indication
14
7. ALARM INdIcATION
The Run LED (Red) is flickering. The LCD display, shows the following information:
‑ Alarm affected indoor unit No.
‑ Alarm Code.
‑ Unit model.
‑ No. of indoor units connected in the system.
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NOTE
For more detailed information about alarm indication, please refer to Outdoor unit Installation Operation Manual.