-27-
No.EX
※※
-OMW0016
Troubleshooting and Maintenance
○
Troubleshooting chart
When any malfunction is observed, it is recommended to perform the following troubleshooting.
: Depending on the master, the behavior of the port LED may be different. For details, please check the specifications of your master.
SI unit
malfunction
SI unit
COM LED is OFF
Valves do not
work but valve
LEDs are operating
SI unit
PWR (V) LED is OFF
All valves and
valve LEDs are
not operating
SI unit COM LED
stays ON
(not flashing)
Refer to fault
No.2
Energized valves are
swapped in byte unit
Group of valves are
not working
Refer to fault
No.1
Refer to fault
No.3
Refer to fault
No.5
Refer to fault
No.6
Refer to fault
No.7
Refer to fault
No.8
Yes
No
SI unit COM LED is
flashing, and Master
port LED is flashing
Refer to fault
No.4
SI unit COM LED is
flashing, and Master
port LED stays ON