I have attached the link below.
Garage door opener motor keeps running.
When you open your garage door and the motor won t stop running there might be a problem with the limit switch.
It s also possible that the circuit breaker fuse or gfci outlet powering the door opener circuit has tripped or burned.
This problem can be very annoying because it makes a lot of noise.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
In most cases the cause will be a stripped gear or a chain that has come off the sprocket.
Check the manual to see if there are additional troubleshooting steps to take.
About a week ago the motor started running constantly even when the door was not in use.
The motor continues to run after the garage door is closed.
If you are opening your garage door but find that the motor just keeps running your limit switch may need to be adjusted.
While you are waiting on an expert to answer your question a suggestion i have is to set service with a sears technician so they can fix this problem.
If your opener seems to overrun the switch and just keeps trying to pull the garage door up or down after it reaches the end of travel you might assume that it missed the switch or was moving too fast.
If this is the case the motor will run but as the chain isn t where it should be it can t generate the lift to open the door.
If you find that it keeps running this can present a problem in your system.
In a typical situation the motor for your garage door opener should stop running once the door has closed.
Motor will not stop running.
Garage door opener motor running constantly.
The limit switch is the one that controls the travel of the door.
For safety reasons trained professionals only should make limit and force adjustments to your garage door opener.
Set the step ladder under the garage door opener in your garage and use it to access the up and down limit switch adjustment screws located on the side of the garage door opener motor housing.
Finally it s possible the garage door opener s motor.
It tells the motor that lowers and lifts the door when to stop running.
Garage door openers or their remotes can develop problems that don t seem to make sense.
