Hitachi RPI-0.8FSG1 Service Manual page 79

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.
# This alarm code is indicated when the electronic thermal relay for the inverter is activated 3 times
including 3 in 30 minutes. Retry operation is performed up to the occurrence of 2 times.
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-5FSG(3), RAS-8FSG(3), RAS-10FSG(3)
RAS-16FSG(3), RAS-20FSG(3)
RAS-8FXG(3), RAS-10FXG(3)
Restart operation.
Is the compressor
current larger than
activation current?
No
Smaller than
activation current.
Check the diode
module. *1)
Normal
Check the inverter
circuit board (PCB3)
connection. *2)
Normal
*1): Regarding the checking method for diode module, refer to page 1-113.
*2): Regarding replacing or the checking of inverter components, refer to page 1-111 regarding electrical discharge.
Protection Activation Against Instantaneous Overcurrent of Inverter (1)
Model
Yes
(The circuit board is normal.)
Abnormal
Abnormal
(For 5 to 20HP)
Rated Current
380-415V 50Hz
380V 60Hz
14.0 / 25.0
16.5 / 30.0
14.0 / 25.0
Is the cause of
"2"
stoppage " " of
troubleshooting by
7-segments display
"2" or "4"?
"4"
Replace the diode module.
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.
Connect it correctly.
The inverter circuit board
is faulty. Replace it.
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