Maintenance; Troubleshooting - LiftMaster 8155W Guide De L'utilisateur

Maintenance

EVERY MONTH
• Manually operate door. If it is unbalanced or binding,
call a trained door systems technician.
• Check to be sure door opens and closes fully. Adjust if
necessary, page 12.
• Test the safety reversal system. Adjust if necessary,
page 13.
EVERY YEAR
• Oil door rollers, bearings and hinges. The garage door
opener does not require additional lubrication. Do not
grease the door tracks.
• (If applicable) Test the battery backup and consider
replacing the battery to ensure the garage door opener
will operate during an electrical power outage.
Testing the Battery Backup:
1. Unplug the garage door opener from AC power. The
battery status LED will glow solid orange (opener is
operating on battery power) or will fl ash (low battery
power).
2. Open and close the door using the remote control or
door control.
3. In battery backup mode, the Automatic Garage Door
Lock will unlock when the garage door is opened, and
will remain disabled until power is restored.
4. Plug in the garage door opener. Verify the battery
status LED is fl ashing green (battery is charging).
EVERY TWO TO THREE YEARS
• Use a rag to wipe away the existing grease from the
garage door opener rail. Reapply a small layer of white
lithium grease to the top and underside of the rail
surface where the trolley slides.
The Remote Control Battery
To prevent possible SERIOUS INJURY or DEATH:
• NEVER allow small children near batteries.
• If battery is swallowed, immediately notify doctor.
To reduce risk of fi re, explosion or chemical burn:
• Replace ONLY with 3V CR2032 coin batteries.
• DO NOT recharge, disassemble, heat above 212°F
(100°C) or incinerate.
891LM
Pry open the case first
in the middle (1), then
at each side (2 and 3)
with visor clip.
893LM
Pry open the case first
in the middle (1), then
at each side (2 and 3)
with visor clip.
14
Replace with
only 3V CR2032
coin cell battery.
3
1
2
Replace with
only 3V CR2032
coin cell battery.
3
1
2

Troubleshooting

Below are basic troubleshooting tips, for additional help
and support videos visit LiftMaster/Customer-Support or
contact your installing dealer. For help related to Wi-Fi
visit LiftMaster.com/Customer-Support
My garage door opener will not close and the light bulbs
fl ash:
Check to make sure the LEDs in both sensors are glowing
steadily. The LEDs in both sensors will glow steadily if they
are aligned and wired correctly. See page 10.
My vehicle's Homelink
garage door opener:
Depending on the make, model, and year of your vehicle an
external adapter may be required. Visit www.homelink.com
for additional information.
My garage door opener beeps:
The garage door opener can beep for several reasons:
• Garage door opener has been activated through a device
or feature such as Timer-to-Close, garage door monitor
or LiftMaster Internet Gateway.
• Operating on battery power or the battery needs to be
replaced.
My neighbor's remote control opens my garage door:
Erase the memory from your garage door opener and
reprogram the remote control(s).
The garage door moves 6-8", stops or reverses:
• Manually open and close the garage door. Garage door
may be binding or there may be an obstruction. If the
door is binding, call a trained door systems technician.
• Possible travel module failure.
My remote control will not activate the garage door:
Verify the lock feature is not activated on the door control
or reprogram the remote control.
The wall-mounted door control will not function:
The wires for the door control are shorted or the door
control is faulty.
My garage door opener light(s) will not turn off when the
door is open:
The garage door opener is equipped with a feature that
turns the light on when the safety reversing sensors have
been obstructed or when the motion sensor on the door
control detects movement in the garage. This feature can
be disabled using the door control.
Garage door opener hums for 1-2 seconds with no
movement:
Manually open and close the garage door. Garage door
may be binding or there may be an obstruction. If the door
is binding, call a trained door systems technician.
Cannot connect garage door opener to home Wi-Fi
network:
Ensure the myQ Serial number was entered correctly and
try again. The myQ characters are between A-F and 0-9
only.
For the complete manual visit LiftMaster.com/Customer-Support
® is not programming to my
® ,