Troubleshooting - Chamberlain LA400 Installation And Operation Manual

TROUBLESHOOTING

FAULT
OPERATOR IS DEAD
No LED lights are on.
OPERATOR DOES NOT
RUN
Unit does not respond to
any commands.
MOTOR DOES NOT RUN
Relays "click" when radio
or SBC signal is given, but
the operator does not
move.
GATE STOPS AND
REVERSES
(Force Reversal)
RPM REVERSAL
GATE STOPS
Gate starts to run, then
stops and does not
reverse.
GATE OPENS BUT DOES
NOT CLOSE
Audible beeps (3 times)
when command is given.
GATE'S DO NOT
OPEN/CLOSE IN SYNC
GATE DOES NOT
AUTOMATICALLY CLOSE
Auto Close Timer not
closing gate.
ACCESSORY DEVICE NOT
WORKING PROPERLY
POSSIBLE CAUSE
1) No voltage to board.
2) Bad control board.
1) Low/disconnected battery.
2) Remote not programmed.
3) STOP connection loose/disconnected.
4) Constant Open Command
(Check LED's).
5) Limits not programmed correctly.
6) Bad control board.
1) Low Battery.
2) Cable wiring between control box and
operator arm disconnected or loose.
3) Batteries not connected.
4) Bad motor.
5) Bad control board.
1) Gate met an obstruction.
2) Force set too low.
3) Bad gate hardware.
4) Incorrect Arm installation.
1) Obstructed Arm (bottoms out).
2) Bad RPM Sensor.
3) Too much mA pulled off board.
1) Low battery.
2) Gate met an obstruction.
1) Constant Open Command
(Check LED's).
2) Timer to Close not set.
3) Accessory device wired to Open Only
command.
1) Battery Low >23.5V
1) Bi-Part Delay not set.
2) Limits not programmed correctly.
3) Incorrect Arm Installation
1) Timer to Close not turned on.
2) Gate has opened on Obstruction
Reversal.
3) Operator in "Party Mode".
4) Constant Open Command
(Check LED's).
1) Not installed properly.
2) Enabling Switch not turned on.
3) Loose/disconnected wires.
4) Bad accessory device
FIX
➤ Battery must be >23V, AC or Solar needs to be connected.
➤ Replace control board.
➤ Voltage must be >23V at battery connection.
➤ See Programming Remote instructions.
➤ Check STOP connections.
➤ Clear all Open/Safety devices from obstruction.
➤ See Programming Limits instructions.
➤ Replace control board.
➤ Voltage must be >23V at battery connection.
➤ Check wiring on control board to arm, replace wire if needed.
➤ Connect batteries.
➤ Replace motor.
➤ Replace control board.
➤ Clear gate from obstruction.
➤ See Force Adjustment section.
➤ Service/replace gate hardware.
➤ See Installation section of operator arm.
➤ Check for obstruction on arm, verify arm is not bottomed out.
➤ Replace arm.
➤ Move accessories to separate power source. Use reference chart on
next page to determine max mA draw for circuit board.
➤ Voltage must be >23V at battery connection.
➤ Clear gate from obstruction.
➤ Clear all Open/Safety devices from obstruction.
➤ See Timer to Close section for adjustment instructions.
➤ Rewire desired accessory device to Single Button Input.
➤ Operator will resume normal operation once battery voltage
reaches 24V.
➤ See Bi-Part Delay section for adjustment instructions.
➤ See Programming Limits section for instructions.
➤ See Installation section for instructions.
➤ See Timer to Close section for instructions.
➤ Check DIAG code, clear obstruction.
➤ Use Remote/SBC to resume normal operation.
➤ Clear all Open/Safety devices from obstruction.
➤ Check for proper installation of accessory.
➤ Turn applicable switches on.
➤ Check proper installation of wires.
➤ Replace accessory device.
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