I just moved in a house and the garage opener was working for a while and then it stop. We though it might be the battery, so we put in new batteries in both remotes and now it doesn't work. We can still open and close the garage door by hitting the main button on the inside of the garage. I know we have to reenter the code, but the owners never told us what the code was or left us the manuel so we reenter it or change the code. Would you happen to know what code come with this opener. It's Craftsman 1/2 HP Parts# 41A5021-2E If you could let me know how to reprogram the remote I would appreciate it greatly.