First check the sensor lights.
Garage door intermittenly working.
If the remote works only when held within a few feet of the motor unit rf interference is probably the problem.
If your garage door opener uses a keypad and that keypad stops working then there are a few things you can do to get it functioning again.
This may sound obvious but your garage door transmitters need power to work.
The solutions firstly check that you re using it within the range required for your opener.
When the garage door doesn t budge at all when the remote or wall switch pressed it s almost certain the power source has been disrupted in some way.
Locate and eliminate the source of the rf interference.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
If the batteries in your transmitter are dead the transmitter won t be able to send a signal to your garage door to open.
First check to see if the transmitter on the wall inside your garage still opens your garage door when pressed.