Hitachi RCUE40AG2 Service Manual page 105

Troubleshooting
− Flowchart at abnormal occurrence
Abnormal occurrence in
refrigerant cycle
Could it
NO
be a temporal
phenomenon due to an
accidental factor?
YES
- Stop the compressor of
correspondent cycle
- Count retry times
Retry
control by
YES
the same abnormal
reason is performed specifi ed
times within specifi ed
period?
NO
- Retry code is indicated
- Compressor is re-started
in 3 min.
(Alarm stop)
- compressor of correspondent
cycle is stopped
- indication of alarm code
Abnormal indication of Option / Remote Controller Switch

Indication lamp of remote controller side distinguishes "Run", "Alarm", and "Stop":
- "Run": Red light indication lamp on.
- "Alarm": Light red indication lamp on. Light orange indication lamp on: in case of option switch use
- "Stop": Light red indication lamp off.
pag. 103
SMGB0003 rev.0 - 01/2007
Abnormal occurrence in fan
Is
it judged
that it is possible to
continue operation although fan
is stopped temporally
YES
- Stop the correspondent fan
- Count retry times
Retry
control by
the same abnormal
reason is performed specifi ed
times within specifi ed
period?
YES
1
abnormal
NO
fan per 1 cycle?
And are all fan manual set
SW ON?
YES
- Correspondent fan is stopped
REMOTE OUTPUT (ALARM)
terminals (n54~n55)
- No indication of alarm code (fan
under stop by abnormal function is
indicated in check mode)
Operation continues
NO
- Stop the compressor of
correspondent cycle
- Count retry times
NO
(*) Fan restart by itself
- no indication of retry code
(fan under retry is indicated
in check mode)
- correspondent fan is re-
started in 10 sec.
(*) Cycle retry
- indication of retry code
- compressor is re-started
in 3 min.
5 5