
This page applies to:
LZC1
Small
Panel
Std.
Panel
Appendix: Troubleshooting
(continued)
Symptom
Possible Cause
Solution
Lamps are not at the same
light level.
• Ballast to socket wires different
lengths.
• Distance from the lamp to a
grounded surface is different.
• Mixture of lamp ages or
manufacturers.
Different lengths will cause imbalance (for instance,
3 ft. (0.9 m) of Red wires and 6 ft. (1.8 m) of
Blue wires will cause an imbalance). Add wire as
needed—but do not exceed 7 ft. (2.1 m) total
limit.
Check that the grounded metal is 1/2 in. +/- 1/4
in. (13 mm +/- 6 mm) away from the lamp’s
entire length. All lamps in a fixture should have
the same distance in order to have the same
intensity.
Check that all the lamps are the same exact
type—both manufacturer and color.
Ballasts buzz or hum.
• System miswired.
• Wrong lamp type for ballast
installed.
• Insecurely mounted ballast.
Check for interchanged Hot, Dimmed Hot, and
Neutral wires.
Verify the ballast lamp type and voltage are
correct.
Tighten the mounting screws after checking for
foreign material behind the ballast.
Verify the ballast’s lamp type and voltage are
correct.
Check for Hot and Dimmed Hot swapped, or
Check for correct socket wiring.
• Wrong lamp type or voltage for
ballast installed.
• System miswired.
Lights are flashing or strobing.
Lights go to full, but not all the
way to minimum.
• Ballasts not properly grounded.
• Wrong lamp type for the ballast
installed.
• Lamps are too old.
Black lamp ends or premature
lamp failure.
Check that the fixture is properly grounded and
that a ground plane is 1/2 in. +/- 1/4 in. (13 mm
+/- 6 mm) away from the lamp’s entire length.
Verify ballast lamp type matches lamp.
Relamp the entire fixture.
Lights flicker or drop out at
Low End.
• Poor connections.
• Ballast to Socket wires too long.
• Lamps were not kept at full intensity
for 100 hours before dimming.
• Lamps are not properly seated in the
sockets.
Check for proper connection of wires to the
sockets and lamp pins to sockets.
Shorten the amount of wire between the ballast
and the sockets—max total length shall not
exceed 7 feet (2.1 m); 3 feet (1 m) for compact
fluorescent. This is especially critical on the
yellow and the blue/white wires since the length
of the wires between sockets is part of the total
length.
Relamp the entire fixture and leave them at full
intensity for 100 hours before dimming.
Check the wire, to socket, to lamp pin
connections.
• Lamps were not kept at full intensity
for 100 hours before dimming.
• Defective or damaged lamps.
• Lamps are too close to a grounded
surface.
• Low End too low in the Lighting
Zone Controller.
Keep the lamps at full intensity for 100 hours.
Replace with new lamps or exchange lamps from
a known good fixture.
Check that the ground plane is 1/2 in. +/- 1/4 in.
(13 mm +/- 6 mm) away from the lamp’s entire
length.
Check Low End voltage in Appendix: Voltage
Map, then reset Low End for this Lighting Zone
Controller using the Digital microWATT
TM
or
eLumen
TM
software.
R
38
Installation Guide for Lighting Zone Controllers