
R
LCP128
TM
Setup and Maintenance Guide
55
Symptom
Likely Cause
Action(s) for Remedy
Circuits always ON or
always OFF.
(a) Bypass jumpers have
not been removed.
(a) Visually inspect the terminal blocks. If the metal bypass
jumpers are installed, see the
LCP128 Installation Guide
for proper circuit test and jumper removal procedure.
(b) Controller is not
powered.
(b) The ‘POWER’ LED at the bottom of the controller should
be lit (refer to “Controller Overview” at the beginning of
this guide for LED location). If it is not, there is no power,
and the feed should be checked.
(c) Controller is in the
override screen.
(c) Press the
Home button to exit the override screen.
(d) Emergency is active.
(d) Disable the emergency function by sliding the emergency
switch at the bottom of the controller to the center
position on all panels.
(e) Circuit breaker is OFF.
(e) Turn the breaker on to verify proper power supply to each
circuit. The breaker could be in the
LCP128
panel or in a
separate distribution panel if the
LCP128
is a feed-
through panel.
(f) Duplicate panel
addresses.
(f) Check that all panel addresses are unique. The panel
address is listed on the Home screen. To change
addresses, see STEP 1 in this guide for more information.
Circuit breakers are
tripping.
(a) Circuits are overloaded. (a) Check load continuity (between DH and N) with a meter,
and verify that there is not a short. If shorted, repair the
miswire or load failure. If not shorted, reset the breaker
and measure the current on the circuit. If greater than
16A, the circuit is overloaded and should be remedied by
re-lamping to smaller loads or by “splitting” the circuit
between two dimming circuits.
Circuits do not dim.
(a) Load type setting is
incorrect.
(b) Module type setting is
incorrect.
(c) Load is not dimmable.
(a) Check that the load type setting for the affected circuits is
set correctly under the Panel Setup menu.
(b) Check that the module type setting for the affected circuits
is set correctly under the Panel Setup menu.
(c) Check the load type setting for the affected circuits under
the Panel Setup menu.
Troubleshooting Guide