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-23-
No.EX##-OMM0008-B
Troubleshooting
•
Troubleshoot
Applicable model:
EX12
∗
-SCM
∗
If a SI unit gets an operation failure, look for the problem using the following flow chart.
If any cause of the problem cannot be found, and a new SI unit can operate well after replaced with the old
one, the failure of SI unit is conceivable. As the failure of SI unit may happen due to the operation
environment (network construction etc), consult us about the countermeasure against that case.
Yes
No
Solenoid valve’s
malfunction
Only the LED at
a solenoid valve
is lit up
See Trouble
No. 2
MS_LED at
SI unit goes
Red light of
MS_LED at SI unit
is lit up
Red light of
MS_LED at SI unit
is blinking
See Trouble
No. 1
See Trouble
No. 3
See Trouble
No. 4
See Trouble
No. 5
See Trouble
No. 6
Green light of
MS_LED at SI unit
is lit up
Red light of
NS_LED at SI unit
is blinking
Red light of
NS_LED at SI unit
is lit up
NS_LED at
SI unit goes off
See Trouble
No. 7
See Trouble
No. 8
Green light of
NS_LED at SI unit
is lit up
Green light of
NS_LED at SI unit
is blinking
SI unit has no error
Solenoid valve’s
malfunction
PWR(V)_LED at
SI unit goes off
See Trouble
No. 9
Solenoid
Valve's failure