If you need to change their tensions move them to a new hole.
Garage door not closing totally on one sid.
Your garage door opener may tell you this by showing a blinking light.
Springs are one of the main causes of malfunctioning garage doors.
If your door has a gap.
Check the sensors one on either side of the opening and look for anything that may obstruct them.
If one of them is off or blinking it means the invisible beam that tells the opener that the way is.
First check the sensor lights.
2 the safety sensors for your garage door located near the floor on each side of the garage on the tracks may have become out of alignment.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
A roll up door also has springs on each side that is controlled by a pulley.
If the door stops and reverses near the bottom the problem may lie with the safety sensors.
All you will have to do in this case is readjust the sensors to allow the garage door to fully close.
Depending on the brand.
They both have lights and both lights should be on.
Side mounted extension springs are installed above the horizontal roller tracks on both sides of the door.
There is one on each side of the door.