Garage Door Goes Down Then Back Up

If your garage door goes down then back up, there are a few potential causes:

Obstructions: Check for any obstructions in the path of the garage door, such as toys, bikes, or trash cans. Remove any obstructions and try operating the door again.
Sensors misaligned: Garage doors have sensors that detect when something is in the way and stop the door from closing. If these sensors are misaligned, the door may go down then back up to prevent damage.
Rollers or tracks damaged: Garage door rollers and tracks can become damaged over time, causing the door to bind or stick. If the rollers or tracks are damaged, it may cause the door to go down then back up.
Motor problems: The motor is what powers the garage door to open and close. If the motor is damaged or malfunctioning, it may cause the door to go down then back up.
Circuit board issues: The circuit board controls the operation of the garage door opener. If the circuit board is damaged or malfunctioning, it may cause the door to go down then back up.
Remote control interference: If you are using a remote control to open and close the garage door, interference from other devices can cause the door to go down then back up. Try using the wall-mounted control panel to operate the door and see if the problem persists.

If you have checked for obstructions and the sensors are aligned correctly, you may need to contact a qualified garage door repair technician to diagnose and fix the problem.

Here are some additional troubleshooting tips:

Reset the garage door opener: Most garage door openers have a reset button. Press and hold the reset button for a few seconds, then release it. Try operating the door again.
Lubricate the rollers and tracks: Apply a silicone-based lubricant to the rollers and tracks. This will help to reduce friction and prevent the door from binding or sticking.
Check the battery in the remote control: A weak battery in the remote control can cause the door to go down then back up. Replace the battery with a new one and try operating the door again.

If you have tried all of these troubleshooting tips and the problem persists, contact a qualified garage door repair technician.