How To Repair LiftMaster Garage Door Opener Model 8355

MAINTENANCE SCHEDULE FOR LIFTMASTER GARAGE DOOR OPENER MODEL 8355

Once a Month

  • Manually operate door. If it is unbalanced or binding, call a trained garage door expert.
  • Check to be sure garage door opens & closes fully. Adjust if necessary.
  • Test the safety reverse test. Make any necessary adjustments.

Once a Year

  • Oil door rollers, bearings and hinges. The garage door opener does not require additional lubrication. Do not grease the door tracks.

Every 2 to 3 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 Garage Shield

Have you thought about how easy it is for burglars to break into your garage by manipulating the garage door opener? The Garage Shield prevents burglars from using a coat hanger or wire to reach the emergency cord. It’s an easy installation and takes only a few minutes. Once installed, the Garage Shield allows for unimpeded use of the emergency cord and allows you to use your garage door as you normally do.

Be sure to check out THE GARAGE SHIELD. It provides an added layer of security as well as peace-of-mind against garage break-ins.

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.

My remote control will not activate the garage door:

  • Verify that the lock feature is not activated on the door control.
  • Reprogram the remote control.
  • If the remote control will still not activate the door check the diagnostic codes to ensure the garage door opener is working properly.

My door will not close and the light bulbs blink on my motor unit:

  • The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction.
  • Verify the safety sensors are properly installed, aligned and free of any obstructions.

My garage door opener light stays on 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. These features can be disabled using the door control.

My neighbor’s remote control opens my garage door:

  • Erase the memory from your garage door opener and reprogram the remote control(s).

The LEDs on the door control blink:

  • If you have a Smart Control Panel installed and the TTC is set to a custom time, press the ON button on the Premium Motion-Detecting Control Panel to set the time properly.

My vehicle’s Homelink® is not programming to my LiftMaster Model 8355 garage door opener:

  • Depending on the make, model, and year of your vehicle an external adapter maybe required. Visit www.homelink.com for additional information

Have you thought about how easy it is for burglars to break into your garage by manipulating the garage door opener? The Garage Shield prevents burglars from using a coat hanger or wire to reach the emergency cord. It’s an easy installation and takes only a few minutes. Once installed, the Garage Shield allows for unimpeded use of the emergency cord and allows you to use your garage door as you normally do.

Be sure to check out THE GARAGE SHIELD. It provides an added layer of security as well as peace-of-mind against garage break-ins.

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The Garage Shield

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