62
S
ECTION
15
Message
Descrip
Ɵ
on
Cause
Solu
Ɵ
on
MALFUNCTION RESPONSE
NO LAMPS (DARK) REPAIR
MACHINE
MMU detected that no lamps
were displayed
All LED lamps not connected
Faulty controller
Connect LED lamps
Replace controller
MALFUNCTION RESPONSE
CHECK LAMP WIRING
REPAIR MACHINE
MMU detected a ming fault
on a lamp circuit
LED lamp(s) not connected
Faulty controller
Connect LED lamp(s)
Replace controller
MALFUNCTION RESPONSE
CONFLICTING LAMPS
REPAIR MACHINE
MMU detected a con
fl
ic ng
lamp output
Short circuit in wiring
LED lamps connected to
wrong terminal
Check and replace faulty
wiring
Check wiring diagram and
terminal block
DEFAULT ALL RED PRESS
START TO RESUME
Default solid red, as shown on
Primary machine
Previous fault has cleared
automa cally
Press “START” bu on on
Primary, when ready to start
program
DEFAULT ALL RED
Default solid red, as shown on
Secondary machine
Previous fault has cleared
automa cally
Press “START” bu on on
Primary, when ready to start
program
HOLD FOR RAILROAD
While running automa c
cycle, system has paused for
railroad preemp on (all red)
Signals are opera ng within
normal parameters
Automa c cycle will restart
once the system is told the
railroad is clear
DEFAULT FLASHER PRESS
START TO RESUME
When primary unit is
fi
rst
powered
Post-power up
Press START PROGRAM