Hitachi RCUE40AG2 Service Manual page 127

Air cooled water chillers, cooling only and heat pump, cooling capacity 106/112 kw - 585/556/1030 kw
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Troubleshooting
Alarm code

[Alarm Stop Reason]
Wrong setting is performed in Dip Switch on Printed Circuit Board, or prohibited operation is performed.
Is alarm reset by stop
switch?
Yes
Is local operation?
Yes (Local)
Is optional wiring
connected?
No
Is it changed over to
remote side during local
operation?
No
pag. 125
SMGB0003 rev.0 - 01/2007
Operation Error / Setting Error
No
Is setting of Dip Switch
correct?
No (Remote)
Is changeover to local side
during remote operation?
Is 220-240V between
PIN1-PIN3 of connector
PCN16 on the printed
circuit board for CPU
(PCB
Yes
Is the signal transmitted
from option device?
No
Yes
(Normal
Running)
Yes
Check Printed Circuit
Board for Operation
No
Set Dip Switch correctly
and turn the power source
Yes (Normal
Running)
operation changeover to
local side during remote
No
Do not perform it.
No
Wiring Check between
remote control switch and
printed circuit board.
)?
C
Yes
Check Printed Circuit
Board for Relay (PCB
Yes
(Normal
Running)
Running)
It is incorrect that remote
transmitted from option
Wiring Check between
external device and
It is incorrect operation
that changeover to
Remote Side during
Do not perform it.
Check printed circuit
board for display (PCB
Check printed circuit
board for operation
Check printed circuit
board for CPU (PCB
(PCB
)
B
ON again.
It is incorrect that
operation.
)
D
operation signal is
device during local
operation.
Do not perform it.
printing board
Local Operation.
)
A
(PCB
)
B
C
5
5

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