Troubleshooting - Craftsman 139.55918 Owner's Manual

TROUBLESHOOTING

DIAGNOSTIC CHART
Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flash
the diagnostic codes.
UP ARROW DOWN ARROW
FLASH(ES) FLASH(ES)
1 1
1 2
1 3
1 4
1 5
1 6
2 1-5
3 2
3 3
SYMPTOM
The garage door opener will not
close and the light bulbs flash.
The garage door opener will not
close and the light bulbs flash.
The door control will not
function.
The garage door opener will not
close and the light bulbs flash.
Door moves 6-8" stops or
reverses.
No movement, only a single
click.
Opener hums for 1-2 seconds no
movement.
Door coasts after it has come to a
complete stop.
No movement, or sound.
Unable to set the travel or retain
position.
The battery status LED is
constantly flashing green.
Safety sensors are not installed, connected, or wires may be
cut. Inspect sensor wires for a disconnected or cut wire.
There is a short or reversed wire for the safety sensors. Inspect
safety sensor wire at all staple and connection points, replace
wire or correct as needed.
The wires for the door control are shorted or the door control is
faulty. Inspect door control wires at all staple and connection
points, replace wire or correct as needed.
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.
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.
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.
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.
Program travel to coasting position or have door balanced by a
trained door systems technician.
Replace logic board.
Check travel module for proper assembly, replace if necessary.
Battery backup charging circuit error, replace the logic board.
36
SOLUTION