Installation Manual
9
Technical Tips:
Lights Do Not Turn On
Lights Turn O Too Quickly
1. Check that lamps and xtures 
work. Compare wiring to the 
Wiring Diagram in this manual. 
Check that the power is on.
2. If installing during daylight, 
remember that after power 
is turned on, the sensor will 
provide 5 minutes of Test Time. 
After 5 minutes, the sensor will 
switch to Automatic Mode and 
will not work during daylight if 
the photocell control is turned to 
night-only (moon) position.
If you require more than 5 minutes 
of Test Time, turn power o for at 
least 10 seconds and then turn power 
back on.
3. If you require the sensor to 
operate both day and night, 
turn the center control knob 
counterclockwise to the sun and 
moon symbol.
4. Check that lights from other 
sources, such as adjacent porch, 
garden, or streetlights, or lights 
from inside the house, are not in 
the sensor’s view. The sensor’s 
photocell may detect the light 
and deactivate. For operation at 
higher ambient light levels, turn 
the photocell control (center 
knob) toward the sun symbol.
5. Was sensor wired hot? If 
so, circuitry may have been 
damaged.
1. Check if the sensor is being 
“tricked” by reected light. If 
lights controlled by the sensor 
shine or reect into the photocell 
(located behind the lens), the 
unit will go on briey, but then 
turn o, “thinking” it is daytime.
Solutions: 
• Adjust the photocell control 
(center knob) slightly 
counterclockwise to allow 
operation at higher ambient 
light levels
• Move the lights or reectors
• Mask lens in the direction of the 
lights and/or reections
2. Check if “R” lamps, non-reector 
“A” lamps, or self-ballasted 
PL lamps are being used in a 
non-enclosed lampholder. If so, 
switch to reector PAR oodlight 
lamps or Quartz oods so the 
sensor is not aected by stray 
light. If using PAR oodlights, 
consider using lower-wattage 
energy-saving lamps.
Problem:
Light
shining or 
reecting
directly
into
photocell










