SECTION FIVE
TROUBLESHOOTING GUIDE
PROBLEM
o
Lamp stays ON all the time at
night.
o
PIR keeps activating for no
reason / at random.
o
PIR sensor will not operate at
all.
o
The PIR sensor will not
operate at night.
o
PIR coverage is poor/sporadic
o
Detection range varies from
day to day
SOLUTION
The unit may be suffering from false activation. Cover the
sensor lens completely with a thick cloth. This will prevent the
sensor from "seeing" anything. If the unit now switches off
after the set time duration and does not re-activate, this
indicates that the problem was caused by false activation. The
problem may be solved by slightly adjusting the
direction/angle of the sensor head (see previous section).
You may not be allowing the unit time to complete it's
warm-up period. Stand well out of the detection range and
wait (the warm-up period should never exceed 1½ minutes).
Occasionally, winds may activate the sensor. Sometimes
passages between buildings etc. can cause a "wind tunnel"
effect.
Ensure the unit is not positioned so as to allow detection of
cars/people using public thoroughfares adjacent to your
property.
Check that the batteries are in good condition and fitted
correctly
Unit may be poorly located. See previous section - ‘Selecting
The Location’ and re-locate the unit.
PIR sensors are influenced by climatic conditions. The colder
the ambient temperature, the more effective the sensor will
be. You may need to make seasonal adjustments to the
sensor head position to ensure trouble-free operation all year
round.
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