Nortek Control Mighty Mule MM571W Installation Manual page 55

Visual Feedback
The unit will not run
The unit stops before reaching
the proper open or close
position.
The unit reverses before
completing an open or close.
The auto close seems to be
working in reverse and/or
accessories not operating
properly
F1 fuse (top left) blown
F2 fuse (bottom left fuse)
blown
Harness fuse blown
Additional information can be found by contacting Nortek Security & Control.
Possible
Diagnosis
1) Closed / open limit(s) not
programmed
2) Transmitter not
programmed
3) Battery issues
4) Arm problem
Limit position not adjusted/set
correctly.
The unit is receiving a stop
command
Hardware not positioned
correctly
Gate/unit has sensed an
obstruction
Dip switch 1 in the wrong
position, or was not updated by
the system
Transformer or solar wired to
board incorrectly
Battery or Batteries connected
incorrectly
Battery or Batteries connected
incorrectly
Check/Solution
h Program closed / open limit(s), see pages 39-42
h Program transmitter
h Check fuses
h Battery harness connections
h Battery under load or inadequate charge
h Check arm connections to control board, and then turn the system off
and back on. If there is a click and no movement, there is an issue
with the arm or power cable
h Reset the extended limit position. Note: if this problem has occurred,
make sure the resetting of limit(s) begins with the operator arm fully
retracted. Do not spin the tube out by hand in order to attach it to the
gate bracket.
h Adjust the arm's retracted position by moving or repositioning the
hardware.
h Adjust the arm hardware (this would correct the retracted position of
the arm)
h Check for a triggered (stuck) transmitter or accessory by removing
batteries from all other wireless accessories.
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
h Turn unit off then back on
h Move dip 1 to the correct position, and then turn unit off then back on
h Check accessories and connections
h Correct wiring
h Replace fuse
h Check battery connections and harness, ensure the battery is
connected red to red (+) and black to black (-)
h Replace F2 fuse and harness fuse if blown
h Check battery connections and harness, ensure the battery is
connected red to red (+) and black to black (-)
h Replace harness fuse and F2 fuse if blown
52
MM571W / MM572W Installation Instructions