We have a craftsman garage door opener part number.
Garage door opener closes then opens again.
Most garage door openers have an open and close limit control.
It will close if i hold the close button down until it reaches the floor.
Incorrectly set limit switches may prevent your garage door from closing completely or opening all the way.
Close the garage door with the opener and watch it closely as it closes.
It closes and then opens again when the door touches the ground.
41a4315 7d dated as 12 02.
The garage door opener limit switch tells the motor that lifts and lowers the garage door when to stop running.
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.
It s a craftsman 1 2 hp model 139 5.
My garage door opener randomly opens the door by itself.
You have an open limit and a close limit on your garage door opener.
Your garage door s logic board is the brain of your garage door opener.
They can also cause the ope.
It can seem quite ghostly having your garage door operate with a mind of its own.
My gargae door will start to close but then stops and opens again.
If the garage door does not close completely or begins to close and then opens back up again the down limit switch needs.
Get logic board replacement.
If the door stops short of closing lengthen the close limit by turning the control knob in the direction indicated usually counterclockwise.
To prevent the garage door from injuring someone in the door or damaging an item in the way of the door all models of liftmaster garage door openers come installed with a safety sensor.
In the down direction if the limit is set beyond the point at which the door closes fully the door will hit the floor and act as if it is hitting something and the safety feature tells it to reverse.
These limits set the distance the door will open or close before stopping.
When the logic board wears out it can cause your garage door to close then open and vice versa without explanation.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
But one of the more perplexing issues is when the door goes up and down by itself with no help from you.
I ve already tried changing the numbers on the unit itself and the remotes but it still keeps happening.
For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam.
