Hitachi SAMURAI Series Service Manual page 121
Condenserless water chillers
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Also See for SAMURAI Series:
- Service manual (174 pages) ,
- Service manual (140 pages) ,
- Manual (118 pages)
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4. Troubleshooting
Troubleshooting by alarm code
01-01
Alarm code
Alarm stop reason
Startup circuit fails to self-hold after reception of operation signal, or upon automatic recovery from instant power failure.
PCB monitoring position
PCBc (CPU PCB) PCN15,PCN17
The connection and insertion of connector
PCN15 on PCBc (CPU PCB) is correct
The connection and insertion of connector
PCN17 on PCBc (CPU PCB) is correct
The insertion of the terminal of relay XR is
Replace relay XR
05-05
Alarm code
Alarm stop reason
Power source connected locally is connected in reverse or in open phase.
PCB monitoring position
PCBd (I/O PCB) 3-phase support R, S, T
3-phase power source shows open or reverse
The connection and insertion of the
connector of 3-phase connectors R,S,T to PCBd
(I/O PCB) is correct
Power source of R,S,T connector shows
open or reverse phase
114
SMGB0097 rev.0 - 07/2015
Startup Circuit Failure
Yes
Yes
correct
Yes
Reverse/Open Phase
phase
No
No
Yes
No
No
No
No
Yes (Open reverse phase)
Yes
Revision of connections
Revision of connections
Revision of connections
Inspect power source and
voltage
Manual correction of
connection and insertion
Revision of wiring
Check PCBd (I/O PCB)
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