Chamberlain LM-W8ME, Manual

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Troubleshooting
Diagnostic Chart
Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the gar
age door opener flash
the diagnostic codes.
DIAGNOSTIC CODE SYMPTOM SOLUTION
Up Arrow Flash(es) Down Arrow Flash(es)
1 1 The garage door opener will not close and t
he light bulbs flash
. Safety reversing 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 and t he light bulbs flash . There is a short or reversed wire for the safety reversing sensors. Inspect safety sensor wire at all staple and connection points,
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 and connection
points, replace wire or correct as needed.
1 4 The garage door opener will not close and t
he light bulbs flash
. Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both LEDs are steady
and not flickering. Make su
re nothing is hanging or mounted on the door that would interrupt the sensor’s path while closing.
1 5 Door moves 15-20 cm stops or reverses.
Manual
ly open and close the door
. Check
for binding or obstructions, such as a br
oken spring or door lock
, correct as needed.
Check wiring connec
tions at travel module and at the logic board. Replace travel module if necessary.
No movement, only a single clic
k
.
Manual
ly open and close the door
. Check
for binding or obstructions, such as a br
oken spring or door lock
, correct as needed.
Replace logic board if necessary.
Opener hums for 1-2 seconds no movement.
Manual
ly open and close the door
. Check
for binding or obstructions, such as a br
oken spring or door lock
, correct as needed.
Replace motor if necessary.
1 6 Door coasts after it has come to a complete stop. Program travel to coasting position or have door balanced by a trained door systems technician.
2 1-5 No movement, or sound. Replace logic board.
3 2 Unable to set the travel or retain position.
Check t
ravel module for proper assembly, replace if necessary.
3 1-4 Door is moving stops or reverses.
Manual
ly open and close the door
. Check
for binding or obstructions, such as a br
oken spring or door lock
, correct as needed.
If the door is binding or st
icking contact a t
rained door systems technician. If door is not binding or st
icking at
tempt to
reprogram travel.
4 5 Opener runs approximately 6-8” (15-20 cm), stops and reverses. Communication error to trav
el module. Check t
ravel module connections, replace travel module if necessary.
4 6 The garage door opener will not close and t
he light bulbs flash
. Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both LEDs are steady
and not flickering. Make su re nothing is hanging or mounted on the door that would interrupt the sensor’s path while closing.
The Protector System (IR Beam) removal:
In some circumstances , The Garage Door Opener may appear to require The Protector SystemTM (IR Beams) upon first installation.
Symptoms to look for: When first powering the The Garage Door Opener, if the Up/Down Buttons/Arrows are blinking, you will need to “Un-Learn” (remove) the IR Beams from The Garage Door Opener memory.
If this occurs, please follow the process detailed below to remove the need for IR Beams for normal opener function and continue the normal installation steps.
If the Protector System (IR Beams) is installed and needs to be removed, the Opener will need to be reprogrammed as follows:
1. Remove the IR Beam wiring from the opener
2. Turn the power OFF for 5 seconds
3. Turn the Power ON for 5 seconds
4. Again turn the power OFF for 5 seconds
5. Turn the power back on and test the opener for normal operation.