ABB i-bus EIB Series Operating Instructions Manual page 37

Troubleshooting
Trouble
Watchdog
constantly
detects objects
Light is
switched
on and off
constantly
Cause/Remedy
• Distance to switched lamps to
small
– Check and if required correct the
alignment of the lens
– Change the lens covering
(use adhesive tape)
– Increase distance to switched
lamps
– Change watchdog mounting
position
• Constant movement in the covered
area or stray light incidence
– Cover lens completely and let
rundown time expire
If the unit does no longer transmit
messages, eliminate the source of
the failure within the coverage zone
• Distance to switched lamps to
small
– If the unit does no longer transmit
messages, eliminate the source of
the failure within the coverage zone
GB
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