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LiftMaster 8550 Support Question

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Question posted by surdez1975 on November 14th, 2013

Error Code 16 On Model 8550

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Request from praisephil413 on January 17th, 2021 1:30 PM
Door opens about 2' stops and closes. Repeats this about 3-4 times. When I help raise the door it opens. It will close on it's own but when activated to open starts the up and down malfunction.

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Related LiftMaster 8550 Manual Pages

8550 Manual - Page 1

...Avenue Elmhurst, Illinois 60126-1196 Contents BELT DRIVE GARAGE DOOR OPENER.. 1 PREPARATION 2 ASSEMBLY 4 INSTALLATION 6-13 INSTALL THE DOOR CONTROL.....14-16 INSTALL THE PROTECTOR SYSTEM 17-20 POWER 21...WARRANTY 40 The Timer -To-Close is ONLY compatible with sectional doors. Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following information for future ...

8550 Manual - Page 2

... and remove ALL ropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement. 5/32 3/16 5/16 12 To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120 V, 60 Hz to loosen, move or adjust garage door, door springs, cables, pulleys, brackets or...

8550 Manual - Page 3

... this manual. Header bracket B. Belt L. Depending on the garage door opener model purchased. GARAGE DOOR OPENER ASSEMBLY A. Curved door arm E. Emergency release rope and handle H. Rail I 3 MyQ™ AND SECURITY✚®2.0 ACCESSORIES 880LM Smart Control Panel® 895MAX Remote Control 829LM Garage Door Monitor Hardware Assembly H1 Hex Screw #8x3/8" (3) [packed...

8550 Manual - Page 9

... the outer trolley toward the garage door opener. H11 H5 HARDWARE H5 Clevis Pin 5/16"x2-3/4" H11 Ring Fastener 4 Position the garage door opener To prevent damage to disconnect the inner and outer trolley. NOTE: If the door hits the trolley when it is raised, pull the trolley release arm down to garage door, rest garage door opener rail on 2x4 placed on...

8550 Manual - Page 10

... installing the garage door opener. 5.2 Make sure the garage door opener is aligned with the bolts (H2), lock door. Measure the distance from a falling garage door opener, fasten it SECURELY to structural supports of the garage. H4 (2) Lag Screw 5/16"- 18x1-5/8" HARDWARE H9 (2) Lock Washer 5/16"-16 H8 (2) Nut 5/16"-18 H2 (2) Hex Bolt 5/16"- 18x7/8" Hanging the garage door opener will...

8550 Manual - Page 13

...Select two aligned holes (as toward the garage door opener until the far apart as possible) and attach using the clevis pin...door arm to the outer pulling the emergency release handle. H11 H6 HARDWARE H2 (2) Hex Bolt 5/16"-18x7/8" H8 (2) Nut 5/16"-18 H7 Clevis Pin 5/16"x1" H11 (2) Ring Fastener H9 (2) Lock Washer 5/16" -16 H6 Clevis Pin 5/16"x1-1/4" 9.4 Align the straight door...

8550 Manual - Page 14

...) PRE-WIRED INSTALLATIONS: Choose Wall any other Security+®2.0 door controls. • Install door control within sight of garage door, out of reach of children at a minimum height of 5 feet Install the door control within sight of the door at the garage door opener in the gang box. 1.1 Strip 7/16 inch (11 mm) of insulation from the moving parts of...

8550 Manual - Page 15

... wires from the end of the wire near the garage door opener. 7/16" (11 mm) H15 GANG BOX 2.3 Connect the wire to the wall and ceiling with screwdriver tip. Do not pierce the wire with the staple as this may cause a short or an open circuit. 2.2 Strip 7/16 inch (11 mm) of insulation from the terminal...

8550 Manual - Page 19

... terminal, push in the sensor bracket and attach with a screwdriver tip. HARDWARE H17 H17 (10) Insulated Staple 7/16" (11 mm) 2.3A Insert the white wires into the white terminal on both sensors to the garage door opener. Insert the white/black wires into the slot on each other. RED WHITE WHITE GREY 19 H13...

8550 Manual - Page 20

... INSTALLATION 2.1B Cut the end of the safety reversing sensor wire, making sure the colors correspond for example) Pre-installed wires 2.4B At the garage door opener, strip 7/16 inch (11 mm) of insulation from the terminal, push in the tab with wire nuts making sure there is enough wire to reach the pre...

8550 Manual - Page 21

... POWER: OPTION A TYPICAL WIRING 1.1A Plug in the top of the motor unit (according to local code): 1.1B Be sure power is NOT connected to the opener, and disconnect power to circuit. 1.2B Remove the garage door opener cover and set aside. 1.3B Remove the attached green ground terminal. 1.4B Cut black and white wires...

8550 Manual - Page 26

... in fire. The battery status LED will either glow solid orange indicating opener is not fully charged. Battery may run slower if the battery is operating on the garage door opener. 1.3 Partially insert the battery into the battery compartment with local codes for the green Battery Status LED to start flashing before proceeding to fully...

8550 Manual - Page 28

... BALANCED (see page 2). The door could result in an open or closed . 5. SAVE THESE INSTRUCTIONS. 28 NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. NEVER use handle to -Close functionality if operating either one-piece or swinging garage doors. Safety reversal system MUST be enabled ONLY when operating a sectional door. 16. ALL repairs to cables...

8550 Manual - Page 29

... garage door opener is compatible with up . USING YOUR GARAGE DOOR OPENER The garage door opener can be adjusted using the door control. When the door is closed and the garage door opener is activated the door will not close the door if you with greater control over the light bulbs on your garage door operation. TIMER-TO-CLOSE The Timer-to 16 MyQ™ accessories. Your garage door...

8550 Manual - Page 30

... is empty (i.e. The following features are turned on they will display the Diagnostic Code. When the lights are accessible through the open position after the specified period of the garage door opener from remote controls while still allowing activation from the fully open garage door and the safety reversing sensor infrared beam is broken. The duration of the...

8550 Manual - Page 31

...see page 32. 31 NOTE: DO NOT enable TTC if operating a one-piece door. DISPLAY ERROR: Displays any errors that have occurred. PROGRAM: Add remote controls, MyQ™ devices, an extra... a remote control or keyless entry to the descriptions below. Refer to the garage door opener using the door control see TEMPERATURE to view the Features menu. SERVICE Press and hold the...

8550 Manual - Page 32

... on the garage door opener. press to operate your garage door. Repeat the steps above for programming additional remote controls or keyless entry devices. NOTE: Your garage door opener may look different. To program additional remote controls refer to program from the program menu. The garage door opener lights will flash (or two clicks will be heard) when the code has been...

8550 Manual - Page 33

... the front of the remote control turn on. 4 Press and release the Learn button on the garage door opener. The Learn LED will activate. All codes are now erased. ERASE ALL DEVICES 1 Press and hold the learn button on garage door opener until the learn LED goes out (approximately 6 seconds). 2 Immediately press and hold the learn button...

8550 Manual - Page 35

... check the splices. The garage door opener clicks but no Bad logic board movement Replace the logic board. 1-5 1 FLASH 5 FLASHES The opener runs approximately 6-8" Communication error to and from that sensor...., or amber LED is hanging or mounted on the garage door opener flash the diagnostic codes. The garage door opener will not close Misaligned or Realign the receiving sensor (...

8550 Manual - Page 36

... obstructions. Troubleshooting DIAGNOSTIC UP CODE ARROW DOWN ARROW SYMPTOM CAUSE RESOLUTION 3-3 3 FLASHES 3 FLASHES The garage door opener is idle and the battery LED is working properly. Check for no Obstruction, binding or Manually open : The garage door opener is binding or sticking, contact a trained door systems technician. If your garage door opener and reprogram the remote...