Troubleshooting Procedure By Alarm Code; Alarm Display - Hitachi YUTAKI S80 Series Technical Catalogue

13. Troubleshooting

13.1 Troubleshooting procedure by alarm code

13.1.1 Alarm display

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Alarm code indication on LCD controller
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Alarm code indication on 7 segment
Indoor unit
Position of the 7 segment at the indoor PCB1&3:
• The 7 segment at the indoor PCB1 will show the alarms from the outdoor
unit, the hydraulic circuit and the 1st cycle.
• The 7 segment at the indoor PCB3 will show the alarms from the 2nd cycle.
Oudoor unit
Position of the 7 segment at the outdoor PCB:
• The 7 segment at the outdoor PCB will show the alarms from the
outdoor unit.
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TCGB0075 rev.0 - 11/2012
Alarm code
Alarm indication
RWH-(4-6)FS(V)NFE
RAS-(4-6)H(V)RNME-AF
SEG1
DSW6
DSW1
LED2
PSW2
SW1
PSW1
PSW3
DSW4
DSW3 RSW
LED1
DSW2
LED3
~
DSW5