ABB i-bus EIB Series Operating Instructions Manual page 38

Troubleshooting
Trouble
Undesirable
automatic
switching
UP watchdog has
no or just short-
range lateral
coverage
Cause/Remedy
• Small animals (eg. pets) cross the
coverage area
• or heat sources due to reflections
from bright or mirroring surfaces
– Check and if required correct the
alignment of the lens
– Change the lens covering
(use adhesive tape)
– Check and if necessary change the
watchdogs mounting position
• Objects or structures interfere with
the unit's range of vision
– Check and if required correct the
alignment of the lens
– Change lens covering
(remove adhesive tape)
– Check and if necessary change the
watchdogs mounting position
GB