19
Troubleshooting
Your garage door opener is programmed
with self-diagnostic capabilities. The UP
and DOWN arrows on the garage door
opener flash the diagnostic codes.
Diagnostic Chart
Garage Door Opener
Diagnostic
LED
UP Button
DOWN Button
DIAGNOSTIC CODE
SYMPTOM
SOLUTION
Up Arrow
Flash(es)
Down Arrow
Flash(es)
1
1
The garage door opener
will not close.
Safety sensors are not installed, connected or wires may be cut. Inspect sensor
wires for a disconnected or cut wire.
1
2
The garage door opener
will not close.
There is a short or reversed wire for the safety sensors. Inspect safety sensor
wire at all staple points and connection points and replace wire or correct as
needed.
1
3
The door control will not
function.
The wires for the door control are shorted or the door control is faulty. Inspect
door control wires at all staple points and connection points and replace wire or
correct as needed.
1
4
The garage door opener
will not close, and the
lights flash.
Safety sensors are misaligned or were momentarily obstructed. Realign both
sensors to ensure both LEDs are steady and not flickering. Make sure nothing
is hanging or mounted on the door that would interrupt the sensors path while
closing.
1
5
Door moves 6-8"
(15-20 cm) stops or
reverses.
Manually open and close the door. Check for binding or obstructions, such as
a broken spring or door lock, correct as needed. Check wiring connections at
travel module and at the logic board. Replace travel module if necessary.
No movement, only a
single click.
Manually open and close the door. Check for binding or obstructions, such as a
broken spring or door lock, correct as needed. Replace logic board if necessary.
Opener hums for 1-2
seconds no movement.
Manually open and close the door. Check for binding or obstructions, such as a
broken spring or door lock, correct as needed. Replace motor if necessary.
1
6
Door coast after it has
come to a complete stop.
Program travel to coasting position or have door balanced by a trained
technician.
2
1-5
No movement or sound.
Replace logic board.
3
1
The garage door opener
moves slightly, then stops
Activate the garage door opener again. If problem persists, replace logic board.
3
3
The battery status LED is
constantly blinking green.
Battery backup charging circuit error, replace logic board.
3
5
The garage door will not
close. Door reverses during
close travel direction only.
• Check that the CTM Learn is appropriate to the installation.
• Check for possible door obstructions and remove.
• Replace defective CTMs with good CTMs to clear the error code (see optional
CTM accessory).
4
1-4
Door is moving, stops or
reverses. Opener beeps
and lights flash.
Manually open and close the door. Check for binding or obstructions, such as a
broken spring or door lock, correct as needed. If the door is binding or sticking
contact a trained door systems technician. If door is not binding or sticking
attempt to reprogram travel.
4
5
Opener runs approximately
6-8" (15-20 cm), stops and
reverses.
Communication error to travel module. Check travel module connections, replace
module if necessary.
4
6
The garage door opener
will not close, and the
lights flash.
Safety sensors are misaligned or were momentarily obstructed. Realign both
sensors to ensure both LEDs are steady and not flickering. Make sure nothing
is hanging or mounted on the door that would interrupt the sensor's path while
closing.
5
5
The door will not close
when using Timer-to-
Close or myQ Smartphone
Control
myQ Remote LED Light must be installed to use TTC or myQ to control the
door. Plug in the myQ Remote LED Light and make sure it is programmed to the
garage door opener.
