Access master garage door opener troubleshooting

You have Access Master garage doors and experience some problems with their functioning? In the tables below, you can see several issues and check out the troubleshooting process for them. Don’t hurry to call in the customer support: most likely, you will resolve the issues with your Access Master garage doors on your own. This table presents the list of the most widespread garage door problems and step-by-step guides for solving them.

Access Master M385 garage door opener troubleshooting

Problem:Solution:
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
Check diagnostic LED for flashes on the motor unit
My remotes will not activate the door:Verify your door control is not blinking. If it is blinking, deactivate the Lock Mode following the instructions for Using the Wall Mounted Door Control
Reprogram remotes following the programming instructions
If remote will still not activate your door, check diagnostic LED for flashes on motor unit
My door reverses for no apparent reason: Repeat safety reverse test after adjustments to force or travel limits. The need for occasional adjustment for the force and limit settings is normal. Weather conditions in particular can affect door travelManually check door for balance or any binding problems
My door reverses for no apparent reason after fully closing and touching the floor: Repeat safety reverse test after adjustments to force or travel limits. The need for occasional adjustment for the force and limit settings is normal. Weather conditions in particular can affect door travel
My lights will not turn off when door is openThe garage door opener is equipped with a security light feature. This feature activates the light on when the safety sensor beam has been obstructed. Refer to Operation section; Using the Wall Mounted Door Control, Light Feature
My motor unit hums brieflyFirst verify that the trolley is against the stop bolt
Release the door from the opener by pulling the Emergency Release Rope
Manually bring the door to a closed position
Loosen the belt by adjusting the outer nut 4 to 5 turns
Run the motor unit from the remote control or door control. The trolley should travel towards the door and stop. If the trolley re-engages with the door, pull the Emergency Release Rope to disengage

Garage Door Opener Troubleshooting step by step