Varför återgår garagebortfall till miljardkod?

Enligt Felsökningsguide för LiftMaster , ett vanligt problem är att en säkerhet + fjärrkontroll återgår till miljard kodteknik. Vad orsakar detta, och finns det någon lösning?

One of the remotes may have reverted to billion code

If you have two Security+ remotes and only one or the other will program to the opener, one of the remotes has reverted back to billion code technology. To figure out which one has, you will either need another remote or a keyless entry.

Clear the memory on the opener. Press and hold the learn button for 6 seconds.

Program the keyless entry. How to program keyless entry (If no keyless entry is available, program a 3rd remote.)

Program one of your handheld remotes. If the first remote does not program, try the second remote. How to program remote control

The remote that will not program in with the additional accessory is the defective remote.