Chamberlain LA500 Installation Manual page 42

TROUBLESHOOTING
FAULT POSSIBLE CAUSES
Obstruction in gates a) Force setting too high
path does not cause
gate to stop and
reverse
Photoelectric sensor a) Incorrect photoelectric sensor wiring
does not stop or
b) Defective photoelectric sensor
reverse gate.
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
minutes or alarm
sounds with a
command.
Alarm beeps three a) Low battery
times with a
command.
On dual-gate a) Defective or incorrect Operator-to-Operator
wiring
system, one gate is
not commanding the
b) Incorrect Operator-to-Operator wireless
other.
learning
On dual-gate a) Incorrect Bipart switch setting
system, incorrect
gate opens first or
closes first.
Alarm beeps when
running.
Expansion board a) Defective main board to expansion board
function not 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.
Switched (SW) a) Main control board is not going to low power
Accessory power mode.
remaining on.
Accessories a) Main control board is going to low power
connected to Switch mode.
(SW) Accessory
power not working
correctly, turning
off, or resetting.
CORRECTIONS
a) Adjust force setting. Retest that obstruction in gate's path causes gate to stop and reverse
direction.
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 22.0 Vdc or higher. Charge batteries by AC or solar power or replace
batteries
a) Check operator-to-operator wiring.
b) Relearn the wireless network of one operator to the other operator.
a) Change setting of both operator's Bipart switch settings. One operator should have Bipart
switch ON (operator that opens first) and the other operator should have Bipart switch
OFF (operator that opens second)
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.O. 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
a) Check that Solenoid is wired to N.C. 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
a) Photoelectric sensor inputs may be active.
a) With expansion board disconnected and running on batteries (no AC power or solar
power available), main board will go into low power mode. Move accessory power to
Accy Power ON terminals (+, -). Connect expansion board to prevent low power mode.
40
TROUBLESHOOTING CHART