Maintenance
Doc. no. BA012498_03
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GB
16.2 Troubleshooting
Fault
Cause/solution
Lighting is off
• Ambient light level is above the preset twi-
light switch value
• Lighting has been switched off manually
• The switch-off delay time has been set too
short
Lighting is switched
off during the hours of
darkness despite the
presence of persons
• Ambient light level is above the preset twi-
light switch value
• Lighting has been switched off manually
Lighting does not
switch off or lighting
switches on spontane-
ously when no per-
sons are present.
• The switch-off delay time has not yet elapsed.
• Fault display due to animals.
• There are moving objects within the field of
detection, such as curtains next to an open
window.
• There are sources of thermal interference
within the field of detection, e.g. heating or
air-conditioning.
Detector does not
respond.
• Lack of power supply; check the mains
voltage.
The controlled bright-
ness does not match
the specified light
target value
• The interior design (e.g. a darker carpet
directly underneath the detector) can result
in the detector or light sensors receiving too
much or too little reflected light.
•
Solution
:
A
. If you use lights with light sensors, cal-
ibrate the light sensors. The light sensors
can be calibrated using the remote control
(see Chapter “Calibration” page 52) or
using the app (see Chapter “Configuring via
light sensors” page 96).
B
. If light measurement is performed by the
DALI detector:
1. Use a lux meter to measure the bright-
ness in the area around the light.
2. Compare the brightness value with the
specified light target value.
3. Adjust the sensitivity of the detector
using the remote control function "Detector
Light Factor" (Chapter 8.16). If the con-
trolled brightness is too low, the light factor
must be reduced.
