Timeguard PDFM1500 - Manual (Page 9)

8
8. Troubleshooting Guide
Problem
• Lamp stays
ON all the
time at night.
• PIR keeps
activating for
no reason
(at random).
• PIR sensor will
not operate at all.
• The PIR sensor
will not operate
at night.
• Unit activates
during the daytime
Solution
Cover PIR lens with a thick cloth. If the light
turns out, check detection area for heat or
reflective source.
If the light stays on, check wiring.
See Connection.
Turn off at the isolation switch. Turn back on
again after 30 seconds. Leave for approximately
15 minutes.
If light activates, check area for false activation from
heat, wind or reflective source.
Check that the power is switched ON at the power
supply or isolation switch.
Turn OFF the power to the unit and check the wiring
connections.
Check the lamp. If the lamp has failed, replace.
Ensure that the lamp is seated correctly in the
lampholder. Please note that the unit will not detect
through glass. (e.g. in a glazed porch).
The level of ambient light in the area may be too
bright to allow operation at the current DUSK
setting. During the hours of darkness, adjust the
DUSK control slowly clockwise until the lamp
illuminates. Refer to previous section for
more details.
Adjust the DUSK Control setting anti-clockwise to
lower the level of ambient light required
for activation.