My Life-Masters, Formula One garage door suddenly will not respond to closing command from remote.? Must hold down inside button in establish to close. Think...

Must hold down inside button in establish to close. Think sensors out of line. What do I do? Not sure how to align sensors if i.e. the problem.
Do glass part nouns conditioners necessitate to be...
Answers:    battery or the remote get wet
Portable gas grill?
Check the photo eyes. If one is blinking they are any not in rank or one of the wires shorted. If both of the lights are on you need to slowly move the photoeyes until they are both solid.
If you enjoy a lift-master, champerlin, or Craftsmen the lights are harder to see and the blinking is hard to see, you involve to watch extraordinarily closely.