EasyManua.ls Logo

Chamberlain LiftMaster LM70EVFF - Diagnostic Chart

Chamberlain LiftMaster LM70EVFF
19 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
en 14
Your garage door opener is programmed with self-diagnostic capabilities�
The UP and DOWN arrows on the garage opener ash 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 the light bulbs ash.
Safety sensors are not installed, connected or wires may be cut� Inspect sensor
wiresfor a disconnected or cut wire�
1 2 The garage door opener will not
close and the light bulbs ash.
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
safety sensor wire 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 light�
Safety sensors are misaligned or were momentarily obstructed� Realign both sen-
sors to ensure both LEDs are steady and not ickering. Make sure nothing is han-
ging or mounted on the door that would interrupt the sensors path while closing�
1 5 Door moves 6-8“ 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
1 5 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
1 5 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 2 Unable to set the travel or retain position� Please refer to section 33 “Frequently Asked Questions”, chapter 15�
4 1-4 Door is moving stops and or reverses� 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 )�
4 5 Opener runs approximately 6-8“,
stops and reverses�
Please refer to section 33 “Frequently Asked Questions”, chapter 15�
4 8 The garage door opener will not
close and the light bulbs ash.
Safety sensors are misaligned or were momentarily obstructed� Realign both sen-
sors to ensure both LEDs are steady and not ickering. Make sure nothing is han-
ging or mounted on the door that would interrupt the sensor‘s path while closing�
5 1 Terminal 1+2 for wall control is shortened
longer than 4 seconds�
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�
5 5 Low voltage� The operator has been shut o󰀨 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
6 1 Maximum radio memory has been
reached�
Maximum capacity for storage of remote controls has been reached. The rst
remote control or more previously programmed remote controls’ codes have been
replaced by a new one� To reset diagnostic remove power from the operator
37 Diagnostic Chart