It depends on which model you have.
Here's one possible solution I found on http://www.gardenweb.com:
"My wall unit has a lock feature. When it is active, the remotes will not
work but the wall unit and outdoor unit will open and close the door. To
activate, I press and hold the small button on the wall unit for 2 or more
seconds. To deactivate, repeat the 2-second hold. When locked, the wall unit
light flashes. No flashing when de-activated."

Also,
"My current ceiling unit has an SRT (learn) button on the control panel that
is used in conjuction with the remote. Iif yours has such a thing, you will
have to remove a panel or other kind of protector. Here's how my remote gets
programmed to match the sensor. With the door closed, press and hold the
remote button. Then press and release the SRT button. The indicator light on
the ceiling unit panel will begin to blink and the opener light will flash
once. Release the remote button."

Lots of problems with these units.
Hope this helps.


huntermillsaps wrote...

Does anyone know how to reprogram a craftsman 1/2 horsepower remote? It
was purchased 3 years ago.
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