Timeguard MLB150C - Manual (Page 10)

SECTION SIX
TROUBLESHOOTING GUIDE
PROBLEM
o Lamp stays
ON all the time
at night.
o PIR keeps
activating for
no reason /
at random.
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).
Check LED status:-
If a single LED is constantly visible, the unit is in Manual Override Mode
and will illuminate until dawn or until reset to Automatic Mode.
To reset to Automatic Mode, switch the internal switch/circuit breaker off/
on within one second.
Automatic Mode is indicated by scrolling LEDs from Left to right.
If a single flashing LED is visible, Holiday Mode has been selected. Switch
the internal wall switch/circuit breaker off/on with one second and the unit
will return to Automatic Mode. The light will illuminate only when motion
is detected.
Automatic Mode is indicated by scrolling LEDs from Left to right.
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 5 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.
In the event of the cover glass
shattering, do not replace with
normal household glass.
Contact the Timeguard helpline
for replacement details.
If you experience problems refer
to Troubleshooting Guide.
If problems still exist, do not
immediately return the unit to store.
Telephone the Timeguard
Customer Helpline
020 8450 0515
Qualified Customer Support
Co-ordinators will be on-line to assist
in resolving your query.
C
Using lamp supplied
*The lamp supplied
is a class C (high
efficiency) unit of
400W power
consumption giving
a similar light
output to the lower
efficiency 500W
units previously
in use.
**The lamp supplied
is a class C (high
efficiency) unit of
100W power
consumption giving
a similar light
output to the lower
efficiency 150W
units previously
in use.