This may sound obvious but your garage door transmitters need power to work.
Garage door intermittenly working.
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.
The solutions firstly check that you re using it within the range required for your opener.
First check to see if the transmitter on the wall inside your garage still opens your garage door when pressed.
As with many such problems the most common problem is the simplest one the motor unit has been unplugged.
Locate and eliminate the source of the rf interference.
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 the sensor lights.
When the garage door opener works intermittently the logic board may be experiencing radio frequency rf interference from nearby sources such as security lights ham radios and some electronics.
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.