LiftMaster Elite Serie Manuel D'installation page 39

SYMPTOM POSSIBLE CAUSES
Gate/door opens, a. Open control active
but will not close
b. Vehicle loop detector active
with transmitter or
c. Loss of AC power with AC FAIL set to
Timer-to-Close.
OPEN
d. Low battery with LOW BATT set to OPEN
e. Fire Dept input active
f. Timer-to-Close not set
g. Close Entrapment Protection Device active
Gate/door closes, a. Vehicle loop detector active
but will not open.
b. Low battery with LOW BATT option set to
CLOSE
Exit loop activation a. Exit vehicle detector setup incorrectly
does not cause
b. Defective Exit loop detector
gate/door to open.
c. Low battery with LOW BATT option set to
CLOSE
Interrupt loop does a. Vehicle detector setup incorrectly
not cause
b. Defective vehicle loop detector
gate/door to stop
c. Anti-tail set to ON
and reverse.
Shadow loop does a. Vehicle detector setup incorrectly
not keep gate/door
b. Defective vehicle loop detector
at open limit.
Obstruction in a. Force adjustment needed
gate/door's path
does not cause
gate/door to stop
and reverse.
Photoelectric a. Incorrect photoelectric sensor wiring
sensor does not
b. Defective photoelectric sensor
stop or reverse
gate/door.
Edge Sensor does a. Incorrect edge sensor wiring
not stop or reverse
b. Defective edge sensor
gate/door.
Alarm sounds for 5 a. Double entrapment occurred (two
minutes or alarm obstructions within a single activation)
sounds with a
command.
Alarm beeps three a. Low battery
times with a
command.
Alarm beeps when a. Expansion board setting
running.
b. Constant pressure to open or close is given
Expansion board a. Defective main board to expansionboard
function not wiring
controlling
b. Incorrect input wiring to expansion board
gate/door.
c. Defective expansion board or defective
main board
TROUBLESHOOTING
SOLUTIONS
a. Check all Open inputs for an active input
b. Check all vehicle detector inputs for an active detector
c. Check AC power and AC Fail option setting
d. Check if AC power is available. If no AC power, then running on
batteries and battery voltage must be 23.0 Vdc or higher. Charge
batteries by AC or solar power or replace batteries.
e. Check Fire Dept input
f. Check Timer-to-Close (TTC) setting
g. Check all Entrapment Protection Device inputs for an active sensor
a. Check all vehicle detector inputs for an active detector
b. Check if AC power is available. If no AC power, then running on
batteries and battery voltage must be 23.0 Vdc or higher. Charge
batteries by AC or solar power or replace batteries.
a. Review Exit loop detector settings. Adjust settings as needed.
b. Replace defective Exit loop detector.
c. Check if AC power is available. If no AC power, then running on
batteries and battery voltage must be 23.0 Vdc or higher. Charge
batteries by AC or solar power or replace batteries.
a. Review Interrupt loop detector settings. Adjust settings as needed.
b. Replace defective Interrupt loop detector.
c. Set anti-tail to OFF.
a. Review Shadow loop detector settings. Adjust settings as needed.
b. Replace defective Shadow loop detector.
a. Refer to the Adjustment section to conduct the obstruction test and
perform the proper force adjustment that is needed.
a. Check photoelectric sensor wiring. Retest that obstructing photoelectric
sensor causes moving gate/door to stop, and may reverse direction.
b. Replace defective photoelectric sensor. Retest that obstructing
photoelectric sensor causes moving gate/door to stop, and may reverse
direction.
a. Check edge sensor wiring. Retest that activating edge sensor causes
moving gate/door to stop and reverse direction.
b. Replace defective edge sensor. Retest that activating edge sensor causes
moving gate/door to stop and reverse direction.
a. Check for cause of entrapment (obstruction) detection and correct. Press
the reset button to shut off alarm and reset the operator.
a. Check if AC power is available. If no AC power, then running on
batteries and battery voltage must be 23.0 Vdc or higher. Charge
batteries by AC or solar power or replace batteries
a. Pre-warning is set to "ON"
b. Constant pressure to open or closed is given
a. Check main board to expansion board wiring. If required, replace wire
cable.
b. Check wiring to all inputs on expansion board.
c. Replace defective expansion board or defective main board
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