TROUBLESHOOTING GUIDE
5
Cover the Detector lens completely with thick cloth or a piece of cardboard to
prevent it ‘seeing’. If the unit now switches off after the set time duration,
there has been interference from some source within range. Adjust the tilt and
swivel head or mask off the required area of lens [see Section 1] to avoid the
interference. Sometimes strong winds, passers-by, road traffic, small animals
or pets can trigger the PIR. Mask or reposition the unit if necessary.
Thoroughly check that your wiring is correct according to the wiring diagram.
Be sure you allow the unit to complete its warm-up period - stay well out of the
detection area and wait [warm-up should never take longer than 5 minutes].
Check power is ON. If so, turn power OFF and check wiring is correct, and that
no connections are loose. Check that lamps in the system have not failed, and
that they are properly seated in their holders.
Ambient light level may be too high in operational area. Adjust the LUX control
slowly clockwise until lamp illuminates [See Section 4 for details].
Ambient light level may be too low in operational area. During daylight, turn the
LUX control slightly anti-clockwise. When lamp extinguishes, enter detection
area, if PIR still activates, adjust LUX further in anti-clockwise direction and
enter the detection zone again. Repeat procedure until PIR does not activate
[See Section 4 for details].
Check suitability of location - see Section 1 for advice, and reposition PIR if
necessary.
The PIR Detector operates by sensing body heat. On cold evenings, the Detector
more easily ‘sees’ body heat; in warm weather, the opposite is true. For this
reason, in some cases it may be necessary to make small seasonal adjustments
to the Detector’s head position, for trouble-free year round operation.
REMEMBER Always ensure the mains supply to the unit is isolated before
removing covers which allow access to live parts.
Light stays ON all the
time at night, or PIR
activates for no reason
at random
Light stays ON all the
time day and night
PIR Detector will not
operate at all
The PIR Detector will
not operate at night
Unit activates in
daytime
PIR coverage is
poor/sporadic
Detection range
changes from day
to day
PROBLEM SOLUTION
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