39
TROUBLESHOOTING
When 990190 29 works abnormally, check assumptive problems and suggested solutions in follow-
ing table that will hopefully solve your problem.
Problem
Possible cause
Suggested Solution
Lighting device does
not turn.
1. Power does not turn on.
2. Wired incorrectly.
3. Lux knob adjusted
incorrectly.
4. Malfunctioned load.
1. Switch on the power.
2. Refer to wiring diagrams for correct
connection.
3. Check if Lux knob is set to the cor-
rect position.
4. Replace the disabled load with a
new one.
Lighting device does
not turn off
1. Auto off time is set too
long.
2. Detector is nuisance
triggered.
3. Wired incorrectly.
1. Set auto off time to a shorter time and
check if the load is switched off or not
according to the preset off time.
2. Keep away from detection coverage
to avoid activating detector while do-
ing the test.
3. Refer to wiring diagrams for correct
connection.
LED does not turn
on
1. Exceeding the detection
range.
2. No power supplied.
3. Wired incorrectly.
1. Walk in the effective detection range
2. Switch on the power.
3. Refer to wiring diagrams. for correct
connection.
Nuisance triggered
There are heat sources, highly
reflective objects or any ob-
jects which may be swayed in
the wind within the detection
coverage.
Avoid aiming the detector towards any
heat sources, such as air conditioning,
electric fans, heaters or any highly reflec-
tive surfaces. Make sure there are no
swaying objects within the detection
coverage.
Summary of Contents for 99 190 29
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