liftmaster Chamberlain Garage Door Opener Transmitter 300MC "closing issues" Questions

won't open or close tries to run but stops the yellow light on rear of unit blinks 4 times then a pause and blinks 4 times again, can open and close while using the manuel bottons on the back of the ...

I have a problem with a guardian 21230L garage door opener when you push the button the light flashes but no door movement happens can you help cheers Tom I have the same problem. Door does not open ...

...prevent a child from getting crushed. If this is set too lightly then the sensor believes that the closing door has encountered an object and will reverse to open.Adjust GRADUALLY until door just ...

hi.. my 1/2 horse liftmaster garage door op[ening is having ANM issue the remote in the truck only opens the door doesnt close it anymore...when you click it.....it ticks repeatedly at the 1/2 unit...

Sensor problem with garage door opener. One of them has a yellow light the other a green. The door starts to close than stops. You can close it if you hold the button down inside and the remothe doesn

When the door closes, it automatically reopens. There are no obstructions so that isn't the issue. If I disconnect the door and cycle the automatic is closes and then immediately reopens. make sure ...

Liftmaster garage door will not close from the remote in the car We, too, am having similar challenges. Our Chamberlain Liftmaster Professional Formula I Part #41A5483-4 used to work great with just ...

Liftmaster garage door openers Model # 3245 (remote Issue) I have 2 liftmaster 3245 garage door openers. The hand held remotes were working fine, then stopped. I replaced the batteries and turned of ...

Garage Door starts to close but reopens. I think it is a saftey sensor issue. one light is green one is orange. Am i on the right track yes very much they both need to be green just try to line them ...

When the temp gets colder, I seem to start experiencing trouble with my garage door. It lets up fine but when its time to close it, the lights flash quickly and will not close. what could be the issue