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13� Troubleshooting
Malfunction
Cause
Remedy
No power at the sensor
■
Fuse has tripped,
not switched ON,
break in DALI wiring
■
Short circuit
■
Activate, change fuse,
turn ON mains switch,
check DALI wiring with
voltage tester
■
Check connections
Light level not being
communicated
■
Break in wiring
■
DALI power
supply faulty
■
Check cable
Sensor sending motion
detection signal when
it should not
■
There is interference,
e.g. fan, air-condition-
ing system or other
source of heat, in the
detection zone
■
Animals moving in
detection zone
■
Wind is moving paper
or plants in the
detection zone
■
Sunlight is shining on
the lens
■
Sudden temperature
change due to air ex-
pelled from fans, open
windows, air-condi-
tioning systems or oth-
er sources of heat
■
Sensor near Wi-Fi or
other wireless commu-
nication source
■
Adjust detection zone
or fit shrouds, increase
distance
■
Adjust zone
or fit shrouds
■
Change detection
zone
■
Mount sensor in
a protected place
or change zone
■
Adjust detection zone
or install in a differ-
ent place
■
Install at least 2 m
away from the
wireless communica-
tion source
Sensor reach change
■
Differing ambient
temperatures
■
Use shrouds to
define detection zone
precisely
