Hitachi RCUE40AG2 Service Manual page 123

Troubleshooting
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Alarm code
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[Alarm Stop Reason]
Power source connected to unit is reversed phase
or open phase.
*In case of 1~3 cycle unit, "05-05"
In case 4, 5 cycle unit, "C1-05 ~ C5-05".
Is 3 phase power source
phase failure or reverse
phase?
No
Is printed circuit board
for relay (PCB
D1, D1, D1, D4
connector R.S.T correctly connector R.S.T correctly
connected?
Yes
Is the power source of
connector R.S.T part
phase failure or reverse
phase?
No (Correct Phase)
pag. 121
SMGB0003 rev.0 - 01/2007
Phase Abnormality (Reverse Phase / Phase Failure)
Yes (Phase Failure,
Reverse Phase)
No
)
Yes
[PCB Monitoring Position]
No. 1 ~ No. 3 Cycle: PCB
No. 4 and No. 5 Cycle: PCB
(I/O PCB) R, S, T
D1
(I/O PCB) R, S, T
D4
5 5
Power Supply,
Wiring Check
Connection repair
Repair to correct
phase
Check printed
circuit board for
relay (PCB )
D