Liftmaster security+ pro 1/3HP garage door opener 41A5021-1D front light not working and light in back will not flash while trying to program remote. 41A5021-1D unit has red button on back that won't flash to program remote which has yellow light. Remote was working before I messed with it while I was trying to program car remote (built into car) :o( Successfully programmed first remote on door #1. HELP
1,547 views
Usually answered in minutes!
×