Likely causes
If nothing happens, the opener may not be receiving a command or power. On many openers, a door that closes only while the wall control is continuously held can indicate a safety-sensor problem. A door that stops partway can be meeting resistance or triggering the opener’s force protection. If it touches the floor and reopens, the close travel setting or floor contact may be involved.
Safe checks
- Make sure the doorway is clear of people, pets, vehicles, and objects.
- Check whether the opener has power and whether the wall control responds.
- Look at both photo eyes near the floor. Remove loose objects or dirt blocking the beam; do not move wiring or bypass the sensors.
- From a safe position, watch whether the door binds, tilts, shakes, or makes a sharp mechanical sound.
What the result means
- Nothing happens: Check power and the wall control before assuming the door itself is stuck.
- Starts down, then reverses: Recheck the sensor path and watch for resistance.
- Stops partway: Treat repeated stopping, binding, or a crooked door as a mechanical warning.
- Reaches the floor, then reopens: The opener may be reacting to floor contact or an incorrect travel limit.
- Closes only while holding the wall control: The opener may not be receiving a valid safety-sensor signal.
When to stop DIY
Stop operating the door if it is crooked, unusually heavy, off its track, or has a loose cable. Do not adjust springs, cables, drums, bottom brackets, or opener force to overpower resistance.
When to call a professional
Call a qualified garage door professional for a suspected spring or cable problem, a door that binds or sits unevenly, damaged tracks, or a reversal that continues after the sensor area is clear.