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Troubleshooting
Operating Manual PIT gb
1004627-EN-04
| 26
8
Troubleshooting
Error
Cause
Description/measure
LED off
0 V voltage supply not
present and/or no signal
at corresponding input
Check the wiring of the inputs
and outputs and rectify wiring
errors
No output signal with control
element operation
24 V voltage supply not
present
Check the wiring of the inputs
and outputs and rectify wiring
errors
Control element damaged
External force
Exchange defective control ele-
ment
Function of the unit impaired
Connection cable dam-
aged
Check connection cable and ex-
change if necessary