Hitachi RPI-0.8FSG1 Service Manual page 69

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 3 minutes after power is supplied to the outdoor unit when the indoor
unit No. connected to the outdoor unit is duplicated by setting of RSW.
In the case of H-Link System, this alarm code is indicated when DSW1 of the outdoor unit PCB and DSW5
of the indoor unit PCB are incorrectly set.
In this case, set correctly DSW1 and DSW5 after turning off Main Switch.
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 AC 220V or 240V is supplied to voltage *A or *B on PCB1 in the
outdoor unit during inverter compressor stoppage.
Is 220VAC or 240VAC applied *A
during stopping?
Yes
PCB1 is normal
Power Supply
380-415V/50Hz Between terminal #3 of PCN14 on PCB1
380V/60Hz and faston terminal "N" on PCB1
220V/60Hz Between terminal #3 of PCN14 on PCB1
and faston terminal "S" on PCB1
Phenomenon
Abnormality of
Picking up Circuit
for Protection
Faulty PCB
*1): Check wiring system connecting to PCN14 and PCN2 on PCB1.
Incorrect Indoor Unit No. Setting
Abnormality of Picking up Circuit for Protection
No
No
*A
Cause
Incorrect Connection
(Outdoor Unit)
Faulty PCB1
Is 220VAC or 240VAC applied *B
during stoppage?
Yes
Between terminal #3 of PCN2 on PCB1
and faston terminal "N" on PCB1
Between terminal #3 of PCN2 on PCB1
and faston terminal "S" on PCB1
Check Item
Check voltage supplied
to connectors.
TROUBLESHOOTING
No
Check wiring connection
of other PCB. *1)
*B
Action
(Turn OFF Main Switch)
Repair wiring
connections.
Replace PCB.
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