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LiftMaster 87504-267 Instrucciones De Montaje página 44

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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.
DIAGNOSTIC CODE
Up Arrow Flash
Down Arrow Flash
(es)
(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.
The garage door opener will not close.
The control panel will not function.
The garage door opener will not close.
Door moves 6-8" (15-20 cm) 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.
SOLUTION
Safety reversing 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 reversing sensors. Inspect safety sensor wire at all staple and
connection points, replace wire or correct as needed.
The wires for the control panel are shorted or the control panel is faulty. Inspect control panel wires at all staple
and connection points, replace wire or correct as needed.
Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors until both LEDs
are glowing steady. 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.
44

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