Troubleshooting And Maintenance - SMC Networks EX260 Series Operation Manual

Troubleshooting and Maintenance

○Troubleshooting chart
When any malfunction is observed, it is recommended to perform the following troubleshooting.
SI unit
malfunction
Yes
No
SI unit
PWR LED is OFF
SI unit
PWR (V) LED
is OFF
L RUN LED is OFF
ON or flashing
L ERR LED is
ON or flashing
OFF
Group of valves
not working
All valves and
valve LEDs are
not operating
Valves do not
work but valve LEDs
are operating
-19-
Flashing
L ERR LED
is flashing
OFF or ON
OFF
L ERR LED is OFF
ON
Refer to fault
No.1
Refer to fault
No.2
Refer to fault
No.3
Refer to fault
No.4
Refer to fault
No.5
Refer to fault
No.6
Refer to fault
No.7
Refer to fault
No.8
Refer to fault
No.9
No.EX※※-OMP0005-E