Hitachi SAMURAI Series Service Manual page 127
Water cooled water chillers -modular-r134a-screw type
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Also See for SAMURAI Series:
- Service manual (137 pages) ,
- Service manual (174 pages) ,
- Manual (118 pages)
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4 Troubleshooting
Troubleshooting by alarm code
40-40
Alarm code
Alarm stop reason
The settings of the DIP relative to the function to control the number of units switch are unrecognisable.
PCB monitoring position
PCBa (Setting PCB) DSW3-1~3, DSW6-1~3
PCBa (Setting PCB) RSW1
The rotatory switches of PCBA (Setting PCB)
of master module are correctly set
The DIP switches on PCBA (Setting PCB) of
each module are correctly set
The H-LINK transmission wiring between
master module and slave modules is
disconnected or connected wrongly
40-40
Alarm code
Alarm stop reason
Switching of cooling/heating operation order to master module while the system is in operation, when using the function
of control of Master/Slave group.
Retry indication
No indication
119
SMGB0120 rev.0 - 11/2017
Incorrect Setting of control of Master/Slave group
No
Yes
No
Yes
Yes
No
Wrong operation of Control of Master/Slave group
Switched cooling/
No
heating operation order
during system operation
Yes
Check PCBc (CPU PCB)
Set the number of
connected units correctly
Set the DIP switches
correctly
Check wiring
Check PCBc (CPU PCB)
Check of thermistors
4
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Table of Contents
Troubleshooting
