Hitachi RAS-(4-12)HRNM(2)(E) - Abnormal Transmission between the Indoor Units and the Outdoor Unit for es Series

8 Troubleshooting
215
SMGB0064 rev.0 - 08/2011
8
Alarm code
03
Abnormal transmission between the indoor units and the outdoor unit for ES series
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section.
• The unit number and the alarm code are displayed on the display of the outdoor unit PCB.
• This alarm is displayed when an abnormal operation is maintained for three minutes after the normal transmission be-
tween the indoor units and the outdoor unit. Also, an abnormal operation is maintained for 30 seconds after the micro-
computer is automatically reset. The alarm is displayed when the abnormal transmission is maintained for 30 seconds
from the starting of the outdoor unit.
- Investigate the cause of the overcurrent and take the necessary action when the fuses are blown out or the breaker
for the outdoor unit is activated.