Installation Guide
30 MM571W / MM572W Installation Instructions MM571W / MM572W Installation Instructions 31
Audible Feedback Possible Diagnosis Check/Solution
1 Beep, pause, 2 beeps when
attempting to activate the unit.
Reading primary motor short
condition
h Turn the system off and back on.
h Motor leads shorted
h Internal arm problem/board
1 Beep, pause, 3 beeps when
attempting to activate the unit.
Reading secondary motor short
condition
h Turn the system off and back on.
h Motor leads shorted
h Internal arm problem/board
The unit clicks with no arm
movement
Open motor circuit
h Internal arm problem
Additional information can be found by contacting Nortek Security and Control.
If your gate operator does not function properly after it is installed, use this guide before calling the Nortek Security and 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 Check battery harness , ensure the battery is connected red to red
(+) and black to black (-)
h Check both board fuses and harness fuse
h Check the battery voltage
h Check charge source
h Ensure the unit is switched on
LED 2 (red) 1 blink, pause, 1
blink…
Cycle terminal shorted
Detach any wires connected to this terminal. If the LED clears and
the unit begins to function, check for a defective accessory, triggered
accessory or shorted wiring.
LED 2 (red) 2 blinks, pause, 2
blinks…
Safety terminal shorted
Detach any wires connected to this terminal. If the LED clears and
the unit begins to function, check for a defective accessory, triggered
accessory or shorted wiring.
LED 2 (red) 3 blinks, pause, 3
blinks…
Exit terminal shorted
Detach any wires connected to this terminal. If the LED clears and
the unit begins to function, check for a defective accessory, triggered
accessory or shorted wiring.
LED 2 (red) 4 blinks, pause, 4
blinks…
Shadow terminal shorted
Detach any wires connected to this terminal. If the LED clears and
the unit begins to function, check for a defective accessory, triggered
accessory or shorted wiring.
LED 2 (red) 5 blinks, pause, 5
blinks…
Close Edge terminal shorted
Detach any wires connected to this terminal. If the LED clears and
the unit begins to function, check for a defective accessory, triggered
accessory or shorted wiring.
LED 2 (red) 6 blinks, pause, 6
blinks…
Open Edge terminal shorted
Detach any wires connected to this terminal. If the LED clears and
the unit begins to function, check for a defective accessory, triggered
accessory or shorted wiring.
Charge LED rapidly ashing
Unit does not detect the presence of
a battery
h Check battery connections and harness, ensure the battery is
connected red to red (+) and black to black (-)
h Check all fuses
Charge LED off Unit not charging
h Battery at full charge
h Top left fuse if blown, check charge source polarity, replace fuse
h Normal systems check, it will come back on momentarily.
h No transformer output, proper output should be 19 Vdc
h Poor or night solar conditions.
h Check circuit breaker or GFI.
h Power at outlet
h Low voltage wire problem from charge source (transformer or
solar panel) to the control board.
h Ensure transformer or solar panel wires are properly connected to
the control board. It is necessary to observe correct polarity.
Charge LED Flashing Battery or Batteries disconnected
Connect battery/batteries