If The door starts to close, then reverses and the opener light blinks.
Then Photo-eye alignment.
The sensors near the floor are out of line or dirty; a clean and re-aim usually restores normal closing.

Inspection, adjustment, sealing, and section-level repairs.
There are more moving parts on a garage door than most people expect: twenty or so rollers, a dozen hinges, tracks, brackets, cables and seals. This category covers the care and replacement of all of them.
Garage Door Safety InspectionA tenant mentioned the door is louder than it used to be.
Garage Door Tune-UpTwice this week the door started closing, stopped a metre from the floor and reopened on its own.
Off-Track Garage Door ResetThere was a loud bang from the garage, then silence.
Garage Door Panel ReplacementThe top section has developed a bend where the opener arm pulls on it.
Garage Door Bottom Seal ReplacementThere are mouse droppings along the wall behind the recycling bins, and at one bottom corner of the door the vinyl has a neat…
Garage Door Perimeter WeatherstripThe bedroom over the garage is always the cold room, and standing in the garage you can feel why: a steady draft along the door…
Garage Door Manual Lock RepairYou have just moved in.Tap a situation. The answer opens here.
If The door starts to close, then reverses and the opener light blinks.
Then Photo-eye alignment.
The sensors near the floor are out of line or dirty; a clean and re-aim usually restores normal closing.
If The door touches the floor and pops back open.
Then Close-limit adjustment.
The opener thinks it hit something; setting the travel limit correctly stops the bounce.
If The door closes but leaves a gap along the bottom.
Then Bottom seal and limit setting.
A compressed seal or a short travel limit leaves daylight; both are simple to correct. Garage Door Bottom Seal Replacement
On-site assessment preferred · (226) 780-2691, open 24/7