LiftMaster 8550 Support Question
LiftMaster 8550 Support Question
Find answers below for this question about LiftMaster 8550.Need a LiftMaster 8550 manual? We have 1 online manual for this item!
Question posted by wilsonoil on November 26th, 2015
Door Not Closing Completely
recently my lift master door began not closing completely to the floor. Stops about 2" high. Problem?
Current Answers
Answer #1: Posted by waelsaidani1 on November 27th, 2015 4:54 AM
waelsaidani1
Member since:
May 12th, 2013 Points: 19,501,797
Member since:
May 12th, 2013 Points: 19,501,797
Related LiftMaster 8550 Manual Pages
8550 Manual - Page 1
... the garage door opener on a one -piece door, visit www.liftmaster.com for future reference: Serial Number:
Date of the garage door opener are required to be used ONLY with MyQ™ and Security✚®2.0
accessories. ■ DO NOT enable the Timer-To-Close feature if you are installing the garage door
opener on a one -piece door. Belt Drive Garage Door Opener Model 8550
FOR...
8550 Manual - Page 6
... system. READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. An
improperly balanced door may not reverse when required and could
be caught in SEVERE
INJURY or DEATH. 3. Install garage door opener 7 feet (2.13 m) or more above the floor and
avoiding contact with
a 1-1/2" (3.8 cm) high object (or a 2x4 laid fl at minimum height of 5 feet (1.5 m). • away...
8550 Manual - Page 7
... fasten the 2x4 to structural supports.
1.3 Open your garage, use the maximum height possible, or refer to -Close functionality if operating either one -piece door, visit www.liftmaster.com for the top edge of the garage door. 1.2 Extend the line onto the header wall above the high point.
An unbalanced garage door might NOT reverse when required. To be...
8550 Manual - Page 10
... to 5.5 Attach the garage door opener to the
5.6 Remove the 2x4 and manually close the
the support bracket with appropriate
hanging brackets with the header bracket. Concrete anchors MUST be different. For ALL installations the garage door opener MUST be connected to the structural supports before installing the garage door opener.
5.2 Make sure the garage door opener is
aligned with the...
8550 Manual - Page 11
... to prevent unraveling.
Ensure the emergency release rope and handle are above the floor and secure with a match or lighter to disengage trolley ONLY when garage door is clear of the emergency release
rope through the hole in an open or closed. Make sure that "NOTICE" is right side up to cut the emergency release...
8550 Manual - Page 13
...straight door arm.
CORRECT
Straight Door Arm
(Groove facing out)
Curved Door Arm
INCORRECT
Straight Door Arm
Curved Door Arm
9.1 Close the door. Disconnect the trolley by 9.2 Attach the straight door arm ...Pin 5/16"x1-1/4"
9.4 Align the straight door arm with the ring fastener (H11). Select two aligned holes (as
toward the garage door opener until the
far apart as possible) and ...
8550 Manual - Page 14
..., allowing 1/8 inch
one wire to protrude from a closing garage door.
can be connected to drill holes or install the drywall anchors.
NOTE: Older LiftMaster accessories and third party products are no obstructions to cross path of the door at the garage door opener in a later step.
NEVER permit anyone to door travel. a minimum height of 5 feet (1.5 m) where small...
8550 Manual - Page 17
... light beam to the full open position, and the garage door opener lights will move in the down until the garage door opener has completed 5 cycles upon power up. above floor above floor
Invisible Light Beam Protection Area
17
Safety Reversing Sensor 6" (15 cm) max. The garage door opener will enter sleep mode when the door is closing garage door: • Correctly connect and...
8550 Manual - Page 22
... GLOWING:
Make sure there is not shorted/broken.
Make sure the sensors are aligned. If the door is closing, the door will reverse and the garage door opener lights will flash ten times.
Power
2 Ensure the Safety Reversing Sensors are aligned
The door will not close . wired correctly. When the light beam is obstructed or misaligned while the...
8550 Manual - Page 23
...Button
23 If anything interferes with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on floor. Adjustments
Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. • Incorrect adjustment of garage door travel
limits will stop in the open and close (DOWN) position. The adjustments allow you...
8550 Manual - Page 24
.... If you are aligned and unobstructed, cycle the door through a complete up and door, repeat the steps for Program the Travel, the programming has timed out. Door MUST reverse on floor.
1.1 Press and hold the
1.2 Press and hold the DOWN Button until the door
is complete.
If the garage door opener lights are flashing 10 times during the steps for...
8550 Manual - Page 25
...25 Repeat the test. When the door reverses upon contact with 1-1/2" high (3.8 cm) object (or 2x4 laid flat) on the floor.
2.1 With the door fully open /close the door 3 or 4 times to
close the door. Without a properly installed safety reversing sensor, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.
• Safety reversal system MUST be...
8550 Manual - Page 26
... battery is not fully charged. The battery status LED will either glow solid orange indicating opener is unplugged.
2.2 Open and close the door using the
remote control or door control. Use a Phillips
head screwdriver to remove the battery cover on the garage door opener.
1.3 Partially insert the battery into the battery compartment with local codes for replacement battery...
8550 Manual - Page 28
... CROSS THE PATH OF THE MOVING DOOR. Weak or broken springs or unbalanced door could result in sight until completely closed . An improperly balanced door may NOT reverse when required and could result in an open or closed .
5. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPENED DOOR.
6. After ANY adjustments are no obstructions to garage door opener BEFORE making ANY repairs or removing...
8550 Manual - Page 29
...stop . USING YOUR GARAGE DOOR OPENER
The garage door opener can be activated through the open garage door and the safety reversing sensor infrared beam is fully open . If the door senses an obstruction or is interrupted while opening cycle. However, you can close from a remote control. The safety reversing sensors do no effect the opening cycle. Prior to the door closing , the door...
8550 Manual - Page 30
...-CLOSE (TTC) (881LM ONLY)
DO NOT enable TTC if operating a one-piece door. Factory default is set to 99 minutes). This feature will automatically turn the garage door opener lights on until the LIGHT button is pressed again, or until the garage door opener is a problem with sectional doors.
MAINTENANCE ALERT (MAS)
This feature assists the homeowner in ensuring the garage door opener...
8550 Manual - Page 31
...time interval before door closes.
FEATURES
Press the navigation button below "MENU" to be programmed through a series of remote controls, MyQ™ devices, door controls and ... battery charge (if applicable). TTC SETTINGS (for garage door opener light to stay on after operation, selectable range of 1-1/2 to control your garage door CONTRAST: Adjust the contrast of the screen.
CYCLE...
8550 Manual - Page 34
... FCC Standards for Home or office use.
The door can then be fully closed . NOTICE NOTICE
Maintenance
EVERY MONTH • Manually operate door. Make any necessary adjustments (refer to be sure door opens and closes fully.
Adjust if necessary (refer to wipe away the existing grease from the garage door opener rail. EVERY TWO TO THREE YEARS • Use...
8550 Manual - Page 35
... connected, if wires are shorted or needed. The garage door opener will not close Misaligned or
Realign the receiving sensor (green LED) by ensuring the LED is steady and not
1-4
1 FLASH 4 FLASHES
the door and the light(s) flash
obstructed safety sensors
flickering. Ensure the wires
and stops and/or reverses
travel module
for incorrect wiring or...
8550 Manual - Page 36
...:
My garage door opener beeps every 30 seconds: Refer to the Battery Status LED section on the door rails may cause
the sensors to be disabled using the door control, refer to the Door Control section. Check for binding or obstructions. If problem persists remove the sensors
apparent reason while
temporarily obstructed from your door is closing , stops and Obstruction...
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