When the door is appropriately balanced it will neither move up or down but stay in place supported by the springs.
Garage door will go up but not down.
This is almost always the result of a dirty.
Now lift the garage door to the ceiling.
How to fix a garage door that won t go all the way down safety sensors.
This could include small items like rocks gum or mud buildup.
If this is set too short your garage door may not shut all the way or it may slam hard on the ground and go back up.
Staples can cut insulation and short out the wires.
Now if your garage door still won t go down after you ve made sure the sensors are properly aligned and there s no obstructions you ll want to take a damp cloth and wipe down the lenses of the sensors.
If the garage door doesn t stay in place call a garage door technician to fix the problem for you.
There may be another sensor near the motor that tells the unit how far to let the garage door go down.
Replace the wiring if needed with garage door opener wiring.
Check for reversed broken or cut wires.
If it remains your garage door is well balanced and can be moved by the garage door opener.
It goes partway down reverses direction and goes back up again.
If you re in the habit of leaving the garage door open a variety of things including.
It could also be caused by a buildup of debris on the tracks that prevents the rollers from moving forward.
If you find that your garage door closes part way and then goes back up this can be triggered by objects on the ground blocking their path such as garbage cans or toys.
Overtime these lenses can become coated with grime dirt and even sawdust.
If the door goes up but you can t make it go down you probably need to adjust the sensors.
Look for two screws on the motor base.
Step by step procedures to try if the garage door of your home will not go down without holding the button before calling a repair man was this video helpful.