If you don’t have any working old remotes. Or your old remote lost. Please follow steps below.
1.Press and hold P button on the opener in garage for 5 seconds (more than 3 seconds and less than 10 seconds)
2. Then Press P button twice (press and release, press again and release)
3. Press any desired button on new remote for two seconds.
4. Now press P button again to exit programming.
5. Test by press button on new remote and it should be working.