Questions & Answers for: Sears LiftMaster lit

...Check to see that both of them are aligned. Normally there's a led on each sensor that should be lit for normal operation. If one is not lit (or flashing) move it a bit so it can 'see' the other ...

...way. Your door sensors are most likely misaligned. Each of them should have a small light that is lit and not blinking. Tweak them until both are

...main light will flash 10 times when the door reverses. Make sure the small light on each sensor is lit. One sensor is the sending unit and the light should be on all the time. The other is the ...

I have Chamberlain LiftMaster 1255R garage door opener. The electric eye does not lit and the opener unit flashes 5 times and then off. Do you know what the problem may be? My garagedoor opener is not

...hold in the mounted control inside the garage to get it to close. * One of my sensor lights is not lit, the other is lit but not flashing. Your sensors must be pointed at one another for them to

...sure your door sensors have not been bumped out of alignment. Each has a small light that should be lit when they are properly aligned. Tweak them a bit and see if the lights are lit. If both lights ...

...close when I push and hold the button. I'm assumung it's the safety reverse sensors. I have 1 LED lit on the one sensor but the other side is out. Do both have to be lit to complete the circuit?? ...

garage door opens 8 inches then closes 8 inches, light is lit light is lit not flashing and turns off with delay You need to check your door springs and also remove the cover of the motor unit and ...

...reverses, lights flash. All indications are that this is a sensor problem, yet both sensors are lit brightly. The door will close if I hold the button on the wall unit down. Can the sensors be

...doesn't always activate the door opener. When it does work, the small light on the push button is lit up. When its not working, the small light is not lit up. Have checked that the wiring at ...