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 Rlara0505 on April 20th, 2017
Door Will Not Stay Closed
door will not stay closed
Current Answers
Answer #1: Posted by Odin on April 20th, 2017 4:17 PM
Odin
Member since:
April 10th, 2010 Points: 41,236,680
Member since:
April 10th, 2010 Points: 41,236,680
Go to https://www.manualslib.com/manual/442900/Chamberlain-8550.html?page=36#manual. Many of the listed PROBLEMS could reflect your situation. To zero in on the right one, count the number of up flashes and down flashes.
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
Related LiftMaster 8550 Manual Pages
8550 Manual - Page 1
... 39 WARRANTY 40 Belt Drive Garage Door Opener Model 8550
FOR RESIDENTIAL USE ONLY
Write down the following information for future reference: Serial Number:
Date of Purchase:
■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door WILL NOT CLOSE unless the Protector System...
8550 Manual - Page 2
... remove any ropes connected to check for binding or sticking. If your garage door and/or the garage door opener if you to the possibility of the door center. Otherwise, the safety reversal system may come from something mechanical or from electric shock.
The opener should stay in the way of the header bracket, it is installed, operated...
8550 Manual - Page 6
... maintenance. 14. They could result in SEVERE
INJURY or DEATH. 3. Door MUST reverse on.contact with vehicles to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 To be made by a trained
door systems technician BEFORE installing opener. 4. Install garage door opener only on the floor. 13. Place entrapment warning label on...
8550 Manual - Page 7
...1.1 Close the door and mark the inside vertical centerline of inches exceeds the height available in the way;
NOTE: If the total number of the garage door. ...Open your door to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL of Garage Door
2x4
OPTIONAL CEILING MOUNT FOR HEADER BRACKET
Structural Supports
Level (Optional)
Sectional door...
8550 Manual - Page 10
... bracket.
(not provided)
H2
H9 H8
10
For ALL installations the garage door opener MUST be connected to the
5.6 Remove the 2x4 and manually close the
the support bracket with appropriate
hanging brackets with the header bracket. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the examples below.
Below are...
8550 Manual - Page 11
... and secure with a match or lighter to disengage trolley ONLY when garage door is
CLOSED. or
or
To prevent possible OVERHEATING of all vehicles to avoid entanglement. Tie a knot at...and obstructions. • NEVER use handle to pull door open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is clear of the light lens and
rotate ...
8550 Manual - Page 13
... release arm is activated.
.
CORRECT
Straight Door Arm
(Groove facing out)
Curved Door Arm
INCORRECT
Straight Door Arm
Curved Door Arm
9.1 Close the door.
The
(H2), nuts (H8) and ...door arm to the outer
pulling the emergency release handle.
trolley using the bolts (H2), nuts (H8) and lock washers (H9).
Select two aligned holes (as
toward the garage door opener...
8550 Manual - Page 14
...: Older LiftMaster accessories and third party products are connected at
(1.5 m), and away from ALL moving parts of the door at the garage door opener in sight until completely closed. The wires
hole and drill a 5/32 inch (4 mm) hole.
(3 mm) to protrude from electrocution: • Be sure power is not necessary to 24 VOLT low ...
8550 Manual - Page 17
... the light beam while the door is closing garage door: • Correctly connect and align the safety
reversing sensor. above floor This required safety device MUST NOT be connected and aligned correctly before the garage door opener will enter sleep mode when the door is NOT connected to the receiving sensor (with the garage door opener light bulb; The sleep mode...
8550 Manual - Page 22
...:
Make sure there is not shorted/broken.
Make sure the sensors are glowing steadily. RED WHITE WHITE GREY
3 Ensure the Door Control is closing, the door will reverse and the garage door opener lights will not close if the sensors have not been 2.1 Check to grey terminal. The LEDs in direct sunlight, switch it with sending sensor...
8550 Manual - Page 23
... travel, it will stop in the open (UP) and close the door. The force is designed with the door's
upward travel it will reverse. 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 interfere with proper operation...
8550 Manual - Page 24
...flash.
* If the garage door opener lights are flashing 5 times during the steps for Program the Travel, the safety reversing sensors are misaligned or obstructed (refer to the programmed DOWN position. Adjustments
1 Program the
Travel
Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. •...
8550 Manual - Page 25
... a properly installed safety reversing sensor, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.
3.2 Press the remote control push button to fail, call for a trained door systems technician.
25
Place the garage door
opener carton in either safety reversing sensor is off (alerting you to the fact that the sensor is obstructed...
8550 Manual - Page 26
... instructions.
1 Install the battery
1.1 Unplug the garage door opener. 1.2 Open the light lens on the right side panel of the garage door opener.
The battery will flash indicating low battery power.
Verify
the battery status LED flashing green, indicating the battery is unplugged.
2.2 Open and close the door using the
remote control or door control. Battery may run slower if the...
8550 Manual - Page 28
... untied, you could result in an open or closed .
5. Garage door MUST reverse on the floor.
11. ALWAYS disconnect electric power to -Close functionality if operating either one-piece or swinging garage doors. This operator system is CLOSED. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPENED DOOR.
6. ALL repairs to pull garage door open door falling rapidly and/or unexpectedly.
7. DO...
8550 Manual - Page 29
...aligned correctly before the garage door opener will move in any other than closed and the garage door opener is fully closed . Your garage door opener is fully closed . power is restored after interruption, or when the garage door opener is broken. the lights will close from a remote control. USING YOUR GARAGE DOOR OPENER
The garage door opener can close the door if you hold the...
8550 Manual - Page 30
...operation.
Door Control
USING THE DOOR CONTROL
SYNCHRONIZE THE DOOR CONTROL To synchronize the door control to the garage door opener, press the push bar until the garage door opener is activated. When the lights are misaligned. TTC can be set period of closing the door. MAINTENANCE ALERT (MAS)
This feature assists the homeowner in ensuring the garage door opener system stays in...
8550 Manual - Page 31
.../on, and turn the entry light feature off/on and set the time interval before door closes.
TTC SETTINGS (for garage door opener light to stay on /off /on . TTC is to be programmed through a series of remote controls, MyQ™ devices, door controls and keyless entries currently programmed to view the Settings menu.
DISPLAY ERROR: Displays...
8550 Manual - Page 34
... FCC Standards for Home or office use handle to pull door open or closed if possible. 2 Pull down and back (toward the
opener).
To replace the batteries, remove the two screws and open door falling rapidly and/or unexpectedly.
• NEVER use emergency release handle unless garage doorway is clear of the rail surface where the trolley...
8550 Manual - Page 36
...travel , refer to page 24.
4-2
4 FLASHES 2 FLASHES The door stops while opening Obstruction, binding or Manually open and close the door. If problem persists remove the sensors
apparent reason while
temporarily obstructed from your door is working properly.
If your garage door opener and reprogram the remote control(s). These are steady and not flickering. Excessive vibration...
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