Chamberlain LiftMaster CSW200101U Installation Manual page 48

TROUBLESHOOTING CHART continued...
SYMPTOM POSSIBLE CAUSES
Shadow loop does a) Vehicle detector setup incorrectly
not keep gate at
b) Defective vehicle loop detector
open limit.
Obstruction in a) Force adjustment needed
gate's path does not
cause gate to stop
and reverse
Photoelectric a) Incorrect photoelectric sensor wiring
sensor does not
b) Defective photoelectric sensor
stop or reverse
c) Photoelectric sensors installed too far
gate.
apart
Edge Sensor does a) Incorrect edge sensor wiring
not stop or reverse
b) Defective edge sensor
gate.
Alarm sounds for 5 a) Double entrapment occurred (two
minutes or alarm obstructions within a single activation)
sounds with a
command.
On dual-gate a) Incorrect Bipart switch setting
system, incorrect
gate opens first or
closes first.
Alarm beeps when a) Expansion board setting
running.
b) Constant pressure to open or close is
given
Expansion board a) Defective main board to expansion
function not board wiring
controlling gate.
b) Incorrect input wiring to expansion
board
c) Defective expansion board or defective
main board
Maglock not a) Maglock wired incorrectly
working correctly.
Solenoid lock not a) Solenoid wired incorrectly
working correctly.
Quick Close not a) Quick Close setting incorrect
working correctly.
b) Interrupt loop detector
c) Defective Expansion board
Anti-Tailgating not a) Anti-Tail setting incorrect
working correctly.
b) Interrupt loop detector
c) Defective Expansion board
AUX Relay not a) AUX Relay setting incorrect
working correctly.
b) AUX Relay wiring incorrect
c) Defective Expansion board
TROUBLESHOOTING
SOLUTIONS
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 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.
c) Move the photoelectric sensors closer together or use edge sensors instead.
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) 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
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
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).
a) Check that Solenoid is wired to N.O. and COM terminals. Check that Solenoid
has power (do not power solenoid from control board accessory power
terminals). If shorting lock's NC and COM wires does not activate Solenoid,
then replace Solenoid lock or Solenoid wiring (refer to Wiring Diagrams).
a) Check that Quick Close setting is ON
b) Check operation of Interrupt Loop detector
c) Replace defective Expansion board
a) Check that Anti-Tail setting is ON
b) Check operation of Interrupt Loop detector
c) Replace defective Expansion board
a) Check AUX Relay switches settings
b) Check that wiring is connected to either N.O. and COM or to N.C. and COM.
c) Set AUX Relay to another setting and test. Replace defective expansion
board.
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