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Garage Door Trouble Shooting

James Roberts • December 27, 2024

Garage Door Trouble Shooting

Reasons Why Your Garage Door Will Not Go Down and How to Fix Them


Something Is Blocking the Path Between the Safety Sensors


Ensure nothing is obstructing the optical sensors' path. These sensors, usually located 15 cm above the ground, prevent the door from closing when something is detected in their path.


Remove any objects in the way, such as boxes or tools, and try closing the door again.


Low Batteries in the Remote or Keypad Transmitter


If the door works using the wall-mounted transmitter but not via the remote or keypad, the batteries may be low. Replace the batteries in your remote control or keypad with new ones.


Ensure you are using the correct type of battery (check the user manual for specifics).


Misaligned Safety Sensors


The optical sensors need to face each other to work correctly. Misalignment can occur due to accidental bumps.


  • Loosen the nut securing the sensor bracket.
  • Adjust each sensor until a green light appears on one unit and an amber light on the other.
  • Tighten the nut to keep the sensors in place.



Dirty Safety Sensor Lenses


  • Dirt or dust accumulation on the sensor lenses can obstruct their function.
  • Clean the lenses gently with a soft, dry cloth or a cotton swab (q-tip).
  • Avoid using abrasive materials that might scratch the lens.


Garage Door Opener Lacks Power


Check if the opener is receiving power.


  • Inspect the GFCI outlet (commonly located in garages) or the electrical panel for tripped breakers.
  • Reset the outlet or circuit breaker if needed.
  • common during holidays when outdoor decorations can overload circuits.


Lock Switch on the Wall Transmitter Is Activated


Some wall-mounted transmitters have a lock function that disables remote controls. If the opener's light blinks when you press the remote button, the lock may be on.


  • Turn off the lock option by pressing the designated button on the wall transmitter.
  • Test the remote again.


Disconnect Cord Is Pulled


The disconnect cord allows the door to be operated manually but can sometimes be pulled accidentally.


  • Check if the opener trolley is moving along the track without engaging the door.
  • Reattach the cord and manually lower the door to align it with the trolley.
  • The opener should snap back into place.


Garage Door Binding Due to Dirt or Misalignment


Dirt or debris in the hinges, wheels, bearings, or pulleys can cause the door to bind.


  • Use a lubricant suitable for garage door components (silicone-based or lithium grease).
  • Apply lubricant to all moving parts, including hinges, rollers, and pulleys.
  • Inspect for dirt build-up and clean as necessary.


By following these steps, you should be able to diagnose and resolve most common garage door issues.


For persistent problems, contact a professional technician.

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