garage door sensor flashed, need wait 15 mins to close? why?
Recently my garage door "red" sensor flashed faster at the beginning, then low, then lower,then I have to wait until 15 mins without no flashing then to close the door!
Below are 2 videos about my flashing sensor problem:
(about 3 flashes in 2 second,)
(about 3 flashes in 3 second, then later 3 flash in 5 second)
My green sensor is always on, no problem!
The brand of my sensor is "Genie".
What's the problem with my red sensor??
Should I buy a new one ?