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LiftMaster 8550 Support Question

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Question posted by Hass33 on March 24th, 2019

My Garage Door Doesn't Open Or Close And I Have A Code 15 On My Keypad

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Answer #1: Posted by Odin on March 24th, 2019 12:20 PM

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Related LiftMaster 8550 Manual Pages

8550 Manual - Page 1

... safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door WILL NOT CLOSE unless the Protector System® is connected and properly aligned. ■ Periodic checks of the garage door opener are installing the garage door opener on a one -piece door. Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following...

8550 Manual - Page 6

... SEVERE INJURY or DEATH: 1. NEVER wear watches, rings or loose clothing while installing or servicing opener. Upon completion of the door. 10. ALL repairs to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 Install wall-mounted garage door control: • within reach, but at least 6 feet (1.83 m) above floor...

8550 Manual - Page 7

... supports. 1.3 Open your garage, use the maximum height possible, or refer to page 8 ceiling installation. DO NOT install header bracket over drywall. • Concrete anchors MUST be RIGIDLY fastened to structural support on header wall or ceiling, otherwise garage door might NOT reverse when required. • DO NOT enable the Timer-to-Close functionality if...

8550 Manual - Page 10

... 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. washers (H9) and nuts (H8). Measure the distance from a falling garage door opener, fasten it SECURELY to the structural supports before installing the garage door opener. 5.2 Make sure the garage door opener is...

8550 Manual - Page 11

... DEATH from the end of the emergency release rope. 7.2 Insert the other end of all vehicles to pull door open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is CLOSED. Make sure that "NOTICE" is right side up to prevent unraveling. Ensure the emergency release rope and handle...

8550 Manual - Page 13

...-engage automatically when the garage door opener is hanging down too far, you may cut 6 inches (15 cm) from the solid end. 13 Trolley release arm Attach with the ring fastener (H11). Attach Slide the outer trolley back (away from the curved door arm. Select two aligned holes (as toward the garage door opener until the far apart...

8550 Manual - Page 14

... 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 a later step. To prevent possible SERIOUS INJURY or DEATH from a closing garage door. Install the Door Control 1 Install the door control INTRODUCTION Compatible with MyQ™ and Security+®2.0 To prevent possible SERIOUS INJURY or DEATH...

8550 Manual - Page 15

... screwdriver tip. Attach the top screw. RED WHITE WHITE GREY PRE-WIRED INSTALLATIONS: When wiring the door control to the garage door opener H17 make sure you use the same wires that are connected to the door control. 15 Attach the wire to the wall and ceiling with the staple as this may cause a short or...

8550 Manual - Page 17

... or DEATH from closing , the door will stop and reverse to the full open position, and the garage door opener lights will light. above floor above floor Invisible Light Beam Protection Area 17 Safety Reversing Sensor 6" (15 cm) max. NOTE: For energy efficiency the garage door opener will not go into the sleep mode until activated. The garage door opener will enter sleep...

8550 Manual - Page 21

.... 1.7B Run wires through the 7/8" hole 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 22

... 3 Ensure the Door Control is closing, the door will reverse and the garage door opener lights will not close . The sensors can be aligned by loosening the wing nuts, aligning the sensors, and tightening the wing nuts. . Make sure the sensor has been wired correctly: white wires to white terminal and white/black wires to the garage door opener. Make...

8550 Manual - Page 23

... cannot be sure fully open (UP) and close the door. PROGRAMMING BUTTONS The programming buttons are located on floor. UP (Open) DOWN (Close) PROGRAMMING BUTTONS UP Button Adjustment Button DOWN Button 23 TIP: If anything interferes with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on the left side panel of the garage door opener and are made, the...

8550 Manual - Page 25

... small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. • Safety reversal system MUST be tested every month. • After ANY adjustments are no more than 6 inches [15 cm] above the floor), call a trained door systems technician. 3 Test the Protector System 3.1 Open the door. Place the garage door opener carton in either safety reversing sensor is off...

8550 Manual - Page 26

...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. • Do NOT dispose of the garage door opener. 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 Backup To reduce...

8550 Manual - Page 28

.... Weak or broken springs or unbalanced door could result in an open or closed . 5. Garage door MUST reverse on contact with garage door control push buttons or remote controls. 3. The door could fall. 9. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 15. ALWAYS keep garage door in sight until completely closed . An improperly balanced door may NOT reverse when required and...

8550 Manual - Page 29

..., or when the garage door opener is activated. LIGHTS FEATURE The garage door opener is equipped with the garage door opener light bulb; However, you can close the door if you with greater control over 100 billion new codes. Your garage door opener has already been programmed at the factory to operate with your garage door opener, see the Door Control section. ENERGY CONSERVATION...

8550 Manual - Page 30

... primary method of the sensor. The lights will come on the screen indicating the garage door opener may take up to automatically close the door. The duration of the light timing can be used ONLY with the garage door opener the screen will activate the garage door opener. A maintenance alert message will light solid). The MAS feature MUST be set . TTC...

8550 Manual - Page 34

... (refer to Adjustment section). Do not grease the door tracks. Batteries Screws (2) 34 To Open the Door Manually To prevent possible SERIOUS INJURY or DEATH from the garage door opener rail. The trolley will operate during an electrical power outage. Check to disengage trolley ONLY when garage door is CLOSED. NOTICETo complywith FCC and or IndustryCanada rules(IC), adjustment...

8550 Manual - Page 35

... travel module. 35 Make sure nothing is hanging or mounted on the garage door opener flash the diagnostic codes. If sending wires may be cut wire(s). Close the garage door using the remote control or the door control. If the sending sensor and the light(s) will not close Safety sensors are connected, then replace the travel module. See page...

8550 Manual - Page 36

... additional troubleshooting issues that turns the light on the door control detects movement in the diagnostic codes: My garage door opener beeps every 30 seconds: Refer to set the time properly. 36 Refer to page 24. 4-2 4 FLASHES 2 FLASHES The door stops while opening Obstruction, binding or Manually open and close the door. Check for binding or obstructions. The LEDs on...