If your door opener is brand new the remote won t work until you program it.
Liftmaster garage door opener not working at all.
However if all the garage door openers stop working at the same time then most likely the garage door antenna is not attached properly or the garage door opener itself needs to be reset.
When a remote stops working on an existing door opener it s often because you need to change the batteries.
Before you can go about fixing your garage door remote you ll need to know how it works in the first place.
Your remote is a radio transmitter.
Fortunately resolving many of these problems can be done safely by the layperson.
The most common reason for a garage door remote transmitter to stop working is a dead battery.
If you have a wall mounted model check the lock switch.
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.
Motor unit assembly parts rail assembly parts and installation parts for liftmaster chain drive garage door opener models 1355 1355m 1356 1356m.
When you press the button on your remote the opener on your garage door receives it.
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.
Most modern garage door remotes transmit at 315 mhz.
If it s on the remote won t work so turn.
Liftmaster remote not working.
Follow the procedure in your owner s manual for doing this.