Hitachi RPI-0.8FSG1 Service Manual page 81

Alarm
Code
G "RUN" light flickers and "ALARM" is indicated on the remote control switch.
G The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the unit No. and alarm code are indicated on the display of the outdoor unit PCB.
# In case that the abnormality of alarm code 51, 52, 53 or 54 occurs three times within 30 seconds, the
alarm code of abnormality occurred for the third time is indicated. Retry operation is performed up to
second time of abnormality occurrence.
Conditions: Inverter current with 105% of the rated current, (1) runs continuously for 30 seconds or
(2) runs intermittently and the accumulated time reaches up to 3.5 minutes, in 10 minutes.
RAS-24FSG1, RAS-30FSG1, RAS-24FS5, RAS-30FS5
Restart operation.
Is the compressor
current larger than
activation current?
No
Smaller than
activation current.
Power Supply
380-415V 50Hz
380V 60Hz
220V 60Hz
Check the inverter
circuit board (ISPM)
connection. *1)
Normal
*1): Regarding replacing or the checking of ISPM, refer to page 1-114 regarding electrical discharge.
Protection Activation Against Instantaneous Overcurrent of Inverter (1)
Model
Yes
(ISPM is normal.)
Activation Current
14.0A
27.5A
Abnormal
(For 24 and 30HP)
Rated Current
380-415V 50Hz
380V 60Hz
14.0 / 27.5
Is the cause of
"2"
stoppage " " of
troubleshooting by
7-segments display
"2" or "4"?
"4"
TROUBLESHOOTING
220V 60Hz
Refer to next page.
Is discharge pressure
high?
Check pressure and
refrigeration cycle.
Check for clogging of
the heat exchanger.
Check the fan motor.
Replace ISPM.
Connect it correctly.
ISPM is faulty.
Replace it.
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