MM571W / MM572W Installation Instructions
49
Audible Feedback
Possible Diagnosis
Check/Solution
Continuous Alarm
Control Board senses an obstruction
or lack of arm movement
h
Path of gate
h
Gate for adequate maintenance, free swinging, level and plumb
h
Adjust Stall Force level
h
Disconnect obstruction detection devices
h
2” clearance not met (see page 17)
h
Arm power cable connections
1 beep every 10 seconds
Low battery
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
2 beeps every 10 seconds
Motor fault
h
Operator arm(s) connections
h
Internal motor short
h
Check fuses
h
Battery harness connections
h
Battery under load or inadequate charge
1 beep, pause, 1 beep,……
Open circuit Primary arm
h
Primary arm connections (white and green)
h
Arm power cable
2 beeps, pause, 2 beeps,……
Open circuit Secondary arm
h
Secondary arm connections (white and green)
h
Arm power cable
3 beeps, pause, 3 beeps,……
Short circuit Primary arm
h
Primary arm connections (white and green)
h
Arm power cable
4 beeps, pause, 4 beeps,……
Short circuit Secondary arm
h
Secondary arm connections (white and green)
h
Arm power cable
5 beeps, pause, 5 beeps,……
Stuck limit switch Primary Arm or
reading open motor circuit
h
Arm power cable wires shorted, crossed or cut/disconnected
6 beeps, pause, 6 beeps,……
Stuck limit switch Secondary arm or
reading open motor circuit
h
Arm power cable wires shorted, crossed or cut/disconnected
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 - Audible Feedback
