LiftMaster RSL12U RSL12U Installation Manual - Page 36

SYMPTOM, POSSIBLE CAUSES, SOLUTIONS, Edge Sensor does

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TROUBLESHOOTING TROUBLESHOOTING CHART continued... SYMPTOM POSSIBLE CAUSES Obstruction in a) Force adjustment needed gate's path does not cause gate to stop and reverse Photoelectric sensor does not stop or reverse gate. a) Incorrect photoelectric sensor wiring b) Defective photoelectric sensor Edge Sensor does a) Incorrect edge sensor wiring not stop or reverse b) Defective edge sensor gate. Alarm sounds for 5 minutes or alarm sounds with a command. Alarm beeps three times with a command. a) Double entrapment occurred (two obstructions within a single activation) a) Low battery SOLUTIONS 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 to stop, and may reverse direction. b) Replace defective photoelectric sensor. Retest that obstructing photoelectric sensor causes moving gate to stop, and may reverse direction. a) Check edge sensor wiring. Retest that activating edge sensor causes moving gate to stop and reverse direction. b) Replace defective edge sensor. Retest that activating edge sensor causes moving gate 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 11.5 Vdc or higher. Charge batteries by AC or solar power or replace batteries On dual-gate system, incorrect gate opens first or closes first. Alarm beeps when running. a) Incorrect Bipart switch setting a) Expansion board setting b) Constant pressure to open or close is given a) Change setting of both operator's Bipart switch settings. One operator should have Bipart switch ON (operator that opens second) and the other operator should have Bipart switch OFF (operator that opens first) a) Pre-warning is set to "ON" b) Constant pressure to open or closed is given Maglock not a) Maglock wired incorrectly working correctly. a) Check that Maglock is wired to N.C. and COM terminals. Check that Maglock has power (do not power maglock from control board accessory power terminals). If shorting lock's NO and COM wires does not activate Maglock, then replace Maglock or Maglock wiring (refer to Wiring Diagrams). 35

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35
SYMPTOM
POSSIBLE CAUSES
SOLUTIONS
Obstruction in
gate's path does not
cause gate to stop
and reverse
a) Force adjustment needed
a)
Refer to the Adjustment section to conduct the obstruction test and perform
the proper force adjustment that is needed.
Photoelectric
sensor does not
stop or reverse
gate.
a) Incorrect photoelectric sensor wiring
b) Defective photoelectric sensor
a)
Check photoelectric sensor wiring. Retest that obstructing photoelectric
sensor causes moving gate to stop, and may reverse direction.
b)
Replace defective photoelectric sensor. Retest that obstructing photoelectric
sensor causes moving gate to stop, and may reverse direction.
Edge Sensor does
not stop or reverse
gate.
a) Incorrect edge sensor wiring
b) Defective edge sensor
a)
Check edge sensor wiring. Retest that activating edge sensor causes moving
gate to stop and reverse direction.
b)
Replace defective edge sensor. Retest that activating edge sensor causes
moving gate to stop and reverse direction.
Alarm sounds for 5
minutes or alarm
sounds with a
command.
a)
Double entrapment occurred (two
obstructions within a single activation)
a)
Check for cause of entrapment (obstruction) detection and correct. Press the
reset button to shut off alarm and reset the operator.
Alarm beeps three
times with a
command.
a) Low battery
a)
Check if AC power is available. If no AC power, then running on batteries and
battery voltage must be 11.5 Vdc or higher. Charge batteries by AC or solar
power or replace batteries
On dual-gate
system, incorrect
gate opens first or
closes first.
a) Incorrect Bipart switch setting
a)
Change setting of both operator’s Bipart switch settings. One operator
should have Bipart switch ON (operator that opens second) and the other
operator should have Bipart switch OFF (operator that opens first)
Alarm beeps when
running.
a)
Expansion board setting
b)
Constant pressure to open or close is
given
a)
Pre-warning is set to "ON"
b)
Constant pressure to open or closed is given
Maglock not
working correctly.
a) Maglock wired incorrectly
a)
Check that Maglock is wired to N.C. and COM terminals. Check that Maglock
has power (do not power maglock from control board accessory power
terminals). If shorting lock’s NO and COM wires does not activate Maglock,
then replace Maglock or Maglock wiring (refer to Wiring Diagrams).
TROUBLESHOOTING
TROUBLESHOOTING CHART continued...