Diagnostic Chart - LiftMaster myQ LM70EVFF Instrucciones De Montaje

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Diagnostic Chart

Your garage door opener is programmed with self-diagnostic capabilities�
The UP and DOWN arrows on the garage opener flash the diagnostic codes.
DIAGNOSTIC CODE
Up Arrow Down Arrow
Flash(es) Flash(es)
1 1 The garage door opener will not
close and the light bulbs flash.
1 2 The garage door opener will not
close and the light bulbs flash.
1 3 The door control will not function�
1 4 The garage door opener will not
close and the light�
1 5 Door moves 6-8" stops or reverses�
1 5 No movement, only a single click
1 5 Opener hums for 1-2 seconds no
movement�
1 6 Door coast after it has come to a
complete stop
2 1-5 No movement or sound�
3 2 Unable to set the travel or retain position�
4 1-4 Door is moving stops and or reverses�
4 5 Opener runs approximately 6-8",
stops and reverses�
4 8 The garage door opener will not
close and the light bulbs flash.
5 1 Terminal 1+2 for wall control is shortened
longer than 4 seconds�
5 5 Low voltage�
6 1 Maximum radio memory has been
reached�
SYMPTOM
Safety sensors are not installed, connected or wires may be cut� Inspect sensor
wiresfor a disconnected or cut wire�
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�
The wires for the door control are shorted or the door control is faulty� Inspect
safety sensor wire at all staple points and connection points and replace wire or
correct as needed�
Safety sensors are misaligned or were momentarily obstructed� Realign both sen-
sors to ensure both LEDs are steady and not flickering. Make sure nothing is han-
ging or mounted on the door that would interrupt the sensors 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 technician�
Replace logic board�
Please refer to section 33 "Frequently Asked Questions", chapter 15�
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 (refer to page 24 )�
Please refer to section 33 "Frequently Asked Questions", chapter 15�
Safety sensors are misaligned or were momentarily obstructed� Realign both sen-
sors to ensure both LEDs are steady and not flickering. Make sure nothing is han-
ging or mounted on the door that would interrupt the sensor's path while closing�
Check wiring for push button if button is stuck and activated permanently� Remove
wiring from terminal 1+2 on operator as test� Do not run push button wires next to
high voltage wiring or in same conduit�
The operator has been shut off due to lower voltage supplied than allowed.
If an external backup battery pack is installed, check if empty� If mains supply is
used, check wiring and supply�
Maximum capacity for storage of remote controls has been reached. The first
remote control or more previously programmed remote controls' codes have been
replaced by a new one� To reset diagnostic remove power from the operator�
SOLUTION
en 14