Lift-master 41A4252-7 remote will not work while the light is on

It seems that the reciever part is defective, likely to surge or lighting, you have to have that module replaced.
Tony

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/tony_a41fa0b801734e2f

THE NEW OPENERS USE A DIFFERENT FREQUENCY - SO IT WON'T WORK.
SORRY

HOPE THIS HELPS

Don't know what malfunction means.

If your battery is good it sounds like your remote or the logic board is failing.

This is a very unusual problem you have. The only thing I can think of is trying a different light bulb or try unplugging the opener and removing the light bulb. Pull out slightly on the center contact of the socket. I am thinking some arcing is causing this problem.

You may need a C943 as the + can make the siginal different.[Chambelain or Merlin]

Lift-Master 2000SDR opener. Opener generally works fine from the remotes. However, first time in the morning in cooler weather, it will start to close and the reverse and the lights blink. I have checked the senors - appear to be aligned properly. I have lubed the gear and used garage door spray on the rollers and hinges at the proper places. To close the door when this happens, I have to hold the wall button.

GOTO HOMELINK.COM

THEY MAKE THE SYSTEM AND HAVE INSTRUCTIONS YOU CAN DOWNLOAD.

PLEASE NOTE: NOT ALL BRANDS/MODELS OF OPENER WILL WORK WITH THIS SYSTEM.

HOPE THIS HELPS

Yes. But you need a remote transmitter that is programmed to open the Lift Master. Then you just follow the instructions in your home link and it should work.

Press the homelink outside 2 button at the same time and hold till fast blinking (all erased). Then press homelink button1 and hold while aiming the transmitter (2 inches away) and pressing appropriate button on the remote. Continue to hold both till fast flashing seed on the homelink. Release both. Then hold the next button on the homelink you want to program, aiming the remote again, and pressing and holding the appropriate button on the remote, until fast flashing, and then releasing again, ......