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12 . Troubleshooting
Malfunction
Cause
Remedy
Light does not switch ON
n
No supply
voltage
n
Lux setting too low
n
No movement being
detected
n
LiveLink box faulty
n
Check supply voltage
n
Slowly increase lux set-
ting until light switches
ON
n
Ensure unobstructed
sensor vision
n
Check detection zone
n
Replace LiveLink box
Light does not switch OFF
n
Lux setting too high
n
Stay-ON time still
effective
n
Interfering heat
sources: e.g. fan heat-
er, open doors and
windows, pets,
light bulb / halogen
floodlight,
moving objects
n
Reduce lux setting
n
Wait until stay-ON time
elapses; reduce stay-
ON time if necessary
n
Use stickers to mask
out stationary sources
of interference
Sensor switches OFF
despite persons being
present
n
Stay-ON time too short
n
Light-level threshold
too low
n
Increase stay-ON time
n
Change twilight setting
Sensor does not switch
OFF quickly enough
n
Stay-ON time too long
n
Reduce stay-ON time
Sensor does not switch
ON quickly enough when
approached from the front
n
Reach is reduced when
approached from the
front
n
Install additional
sensors
n
Reduce distance
between two sensors
Sensor does not switch
ON when persons are
present despite it being
dark
n
Lux setting too low
n
Semi-automatic mode
activated
n
Increase light-level
threshold
n
Activate fully automatic
mode or switch light
ON at button
