Programming an older Garage Door Remote
On 11/23/07 I purchased a Sears 315MHz Craftsman 1/2 HP Garage Door Opener Model 139.53920D with the purple "learn" button. I bought it to replace my broken craftsman door opener which had the green learn button. However I can't get the 3 function remote from the old opener to work with the new opener. The old remote is model 139.53879.
The manual for the old opener says it is a "Security +" system and the manual for the new opener says it is compatible with all "Security +" remotes.
Following the instructions that came with the new opener to reprogram the old remote, I pushed the purple "learn" button on the opener and released it and the "learn indicator light" next to it comes on, then I pushed the large button on the 3 function remote ( actually I tried all 3 buttons on the remote ) and held it till the "learn indicator light" timed out and turned off but nothing happened, also no motor light blink or click's heard. I know the programming works because I erased all codes from the motor unit memory and reprogrammed the remote that came with the new opener and it worked perfectly.
Can you please explain how to program the old remote? Any help you can offer would be greatly appreciated.
Thank's in advance for your help,