Timeguard ECO36PIR - Manual (Page 7)

6. 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 Unit activates during the
daytime
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.
If the unit persists in turning on with the cover over the lens, it is
faulty.
Ensure the unit is not in manual override mode by switching the
internal wall switch/circuit breaker off for at least 10 seconds and
then back on again.
Ensure that there are no central heating flues, extractor fans in
or close to the detection area.
Occasionally, wind may activate the sensor particularly if there
are bushes in the detection area. 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 power is switched ON at the circuit breaker/
internal wall switch.
Turn OFF the power to the unit and check the lamp.
If the lamp has failed, replace. Ensure that the lamp
is seated correctly in the lampholder.
Turn OFF the power to the unit and check the wiring connections
as per the diagram (see fig. 7). Ensure no connections are loose.
The level of ambient light in the area may be too bright to allow
operation at the current lux setting. During the hours of
darkness, adjust the lux control slowly anti-clockwise until the
lamp illuminates.
The level of ambient light in the area may be too dark for the
current lux setting. During daylight, adjust the lux control
slightly clockwise. When the lamp load extinguishes, enter the
detection area. If the PIR still activates, the setting is still too
high. Repeat the above procedure until the PIR does not activate
when you enter the detection area.
Unit may be poorly located. See previous section - ‘Selecting The
location’ and consider relocating 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.