Hitachi RAS-5HVRNM1E Service Manual page 283

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8 Troubleshooting
55
Alarm Code
The RUN LED flickers 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 PCB1
This alarm is displayed when the following phenomenon occurs 3 times in 30 minutes including 3: (Retry operation
is performed up to the occurrence of 2 times.)
Actual frequency from PCB2 is less than 10 Hz (after inverter frequency output form PCB1).
Condition of Activation:
This alarm is indicated when PCB2 is not performed normally.
RAS-(8/10)HRNSE
N O T E
*1): Regarding replacing or checking method for the inverter components, refer to the item
checking other main parts for ES
*2): Before the checking of transistor module, refer to the item regarding electrical discharge.
275
SMGB0060 rev. 1- 12/2010
Inverter Failure for ES series
Series, see on page 312
8
Procedure of

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