20 Most Recent Chamberlain 950CB Remote Control Questions & Answers

It sounds like the wall button has the lock feature engauged.

Is there a small green LED flashing inside the wall button?
Push and hold the lock button for about two seconds and the LED should stop flashing. This will unlock the garage door opener and your remotes should start working. You may have to reprogram your remotes and homelink again since you triedprograming in the lock mode.

Good luck.

THE NEW REMOTE MAY NOT BE THE CORRECT SYSTEM FOR THE UNIT YOU HAVE.
THE ONE THAT DOESN'T WORK MOST LIKELY NEEDS A NEW BATTERY.
NOTE IT MUST BE REPROGRAMED AFTER CHANGING THE BATTERY

HOPE THIS HELPS

That means the battery is either dead or the remote has gone bad.

Ask a friend to search for the instructions and print them for you. You may also be able to go to the library and use a computer there to do this on your own.

When you program your receiver make sure you aren't erasing the memory for the previously installed remotes. There is a storage limit, so you you repeat the process enough times you can lose the first remotes installed.

You have to make sure the trolley on the drive engages with the catch on the door. You may have to lift the door to the point it will engage while you are running the trolley in the close mode. Check that the trolley latch is open and ready to engage the catch. There is usually a rope to pull on to do this.

This is the owners manual. Chamberlain Whisper Drive Model HD900D Owner Manual

http://www.chamberlain-diy.com/doityourself/pdfdocs/114A2184.pdf
This web address came from the Chamberlain site. I also needed to relearn my remotes due to a newer car that has a built in garage door opener that needed to be set. I also needed to reset my keypad remote, those instructions I was able to get from the same site. Good Luck

Not sure if you have deep switch or smart learn button. In first situation you need to change the sequence, in the other, pressing the learn button for more then 30 sec should reset and erase all remotes from opener memory..