I had a LiftMaster model 2000SDR. remote won't work when light is still on. Only wall control can operate garage door. Once lift is off, then remote control work. How to fix this problem?

If the light in the wall control is flashing press and hold the lock button for 3 seconds. Your remote should now work.

Check to see if the light in the wall control is flashing. If it is press and hold the lock button for 3 seconds.

Locate the lock button on the wall control. Press and hold this for 3 seconds. The blinking of the light should stop and your remotes will once again work.

Make sure the light in the wall control is not blinking. If it is press and hold the lock button on the wall control for 3 seconds.

Make sure the light in the wall control is not blinking. If it is press and hold the lock button for 3 seconds.

is the remote coded correctly, fuse on the remote board blown.or faulty remote board

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.

On the wall control press and hold the button with the lock icon for 3 seconds. The blinking should stop and your remotes will once again work.

The Security+ system is a rolling code system and is digital, so it will work with the Homelink in vehicles and with the remote control units that come with the opener. Also with new remotes that are purchased specifically for that opener. Your "clickers" require specific instructions and you need to use the Smart Learn function in order to use them with this opener. In addition, check the Brand Switch settings to be sure they apply to your opener, and the correct Smart Button color on the opener. Read carefully to determine whether you need to set ANY dip switches at all or can you just set them all to off depending on your opener? Check the instructions carefully. Here's a link to the page where you can download a copy of the Clicker instructions if you don't already have it:
. Clicker Model CLT1D Remote Control Owner Manual

Does your wall switch have a lock feature? By pressing the lock button, the remote control is disabled. A flashing light indicates this feature has been activated.

To deactivate, press and hold the lock button for 2 seconds. The flashing should stop and your remote should work again.