This is almost always the result of a dirty or obstructed safety feature.
Garage door always goes back up.
Your garage door opens when it hits the ground.
It may be your garage door sensor.
There are four common problems with garage door sensors three of these homeowners can fix themselves.
When there is a short in your garage door transmitter you will often find the garage door is up upon returning home even though you know you closed the door when you left the house.
The garage door keeps going up and down.
Do any necessary repairs reconnect the opener and try it out.
Your travel down setting needs to be adjusted.
The garage door will automatically go in reverse whenever it hits an obstruction such as the driveway or ground.
Your garage door opens immediately after closing.
First check the sensor lights.
A common cause of a malfunctioning garage door sensor is lack of power supply.
You push the button to close the garage door.
Your garage door sensor generally has two photo sensitive eyes on each side of the door.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
The garage door goes down then back up.
A short in your transmitter causes a continues signal to be sent.
If these are blocked in any way it will cause the doors to go back up so as not to injure children pets or damage that bike your daughter left on the ground.
If they re turned on in both the sensors then there is no issue with the power supply.
If you stillare having problems you can make slight adjustments to either the closingforce opening force or the travel limit adjustments.
It goes partway down reverses direction and goes back up again.
Depending on the brand.
Garage door opener keeps going back up.
In this case the garage door opener detects that it is coming into contact with.
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.
Possible reasons why your garage door hits the floor then goes back up as is the case with so many issues at the home there s no one reason why your garage door closes then opens.
You may think the door is workingok because it feels ok but you should still check all components to be sure.
Sensor power reconnect the sensor to its power supply.