Fault Elimination - ABB Busch Watchdog 6131 102-500 PM/A Series Manual

Fault Elimination

The situations listed below refer only to the direct mode of operation of the Presence Detector.
Diagnosis
Load-relay does not
generally switch:
Presence Detector
does not react:
Presence Detector
switches on without
there being any
apparent movement:
Cause/Remedy
- Defective load-relay, replace
- Replace upstream fuse/switch on again
- Repair broken supply lead
- Check connections on the FM Insert
- Replace device if necessary
- Check potentiometer settings
- Clean soiled lens
- Increase too low brightness limit value
- Check/change heat sources (heating system, etc) in room;
if necessary, cover the area concerned with the masking strip
GB
70