MM571W / MM572W Installation Instructions
51
If your gate operator does not function properly after it is installed, use this guide before calling the Nortek Security & Control
Service Department.
Troubleshooting Guide - Visual Feedback
Visual
Feedback
Possible Diagnosis
Check/Solution
The unit does not seem to
turn on
Blown fuse(s)
Lack of power
Power switch
h
Ensure the unit is switched on
h
Check fuses
h
Battery harness connections
h
Battery under load or inadequate charge
Unit requires po
werc
yc
le in order to reset
the error
LED 2 (red) 1 blink, pause, 1
blink,......
Cycle (CYCL) terminal shorted
Detach all wires connected to the affected terminal. Turn the
system power off and back on. After the start up beep, ensure
the system functions as expected. Troubleshoot each accessory
that was removed and associated wiring individually.
LED 2 (red) 2 blinks, pause,
2 blinks,......
Safety (SAFE) terminal shorted
LED 2 (red) 3 blinks, pause,
3 blinks,......
Exit (EXIT) terminal shorted
LED 2 (red) 4 blinks, pause,
4 blinks,......
Shadow (SHDW) terminal shorted
LED 2 (red) 5 blinks, pause,
5 blinks,......
Close Edge (CLOSE EDGE) terminal
shorted
LED 2 (red) 6 blinks, pause,
6 blinks,......
Open Edge (OPEN EDGE) terminal
shorted
Charge LED rapidly flashing
Unit does not detect the presence of
a battery
h
Check fuses
h
Battery harness connections
h
Battery under load or inadequate charge
Charge LED off
Unit not charging
h
Check fuses
h
Battery harness connections
h
Battery under load or inadequate charge
h
AC output at 120 Vac, transformer output at 19 Vdc
h
Solar panel(s) output based on weather conditions
h
Wiring from charge source to control board, verify correct
polarity
Charge LED Flashing
Battery or Batteries disconnected
Connect battery/batteries