20 Most Recent Craftsman 1/2 HP CHain Drive Garage Door Opener with Security Anti-Burglary Coding Questions & Answers

Push and hold the lock button on the wall console for 3 seconds and that will unlock it.

You will find a button (smart/learn) just to the left of where all those white wires go on the Unit installed inside the garage to open the door. Press and hold it for 6 seconds. This will erase the memory in the opener and your remote should no longer work. Now press and hold the large button on your remote and then press and immediately release the smart/learn button on the garage unit. Your unit is now reprogrammed.

Either you have an obstruction between the two sensors on floor on each side of door or the safety circuit is defective. Make sure both are properly connected. One should be lit up and when you place something in between the sensors the light should go out.

try unplugging and let it reset. If that doesn't work you have a bad board.

Replace the remote batteries. Try again and if it is still not working reset/program the remote as specified in the user manual.

Un-hook the chain from the door, and see how hard it is to raise the door. It should be easy, not hard. If it's hard to open by hand, the opener won't do it, and will stop. You can adjust the springs to counterbalance the door so it's easy for the motor to lift it. You may need new springs.

try holding in wall button the whole time and see if that opens door for you.

Are you sure that the replacement batteries are good? Test them for current output before installing? How about the antenna that is affixed to door opener - is it there to receive the remote's signal? If batts are good as well as the antenna then the receiver portion of the opener has lost gain and is in need of repair.

besides the antenna wire, make sure you have new batteries in your remotes.

make sure the small antenna wire is hanging outside of the motor and light housing. usually a short wire about a foot long.

different frequencies, not compatible

sounds like a relay malfunctioning or mother board issue----that's if you haven't damaged any sensors or had lightning strike----usually you push the button to start it going in the up or down then you push the button to stop it then push it again to go in the opposite direction----I don't know how your operating this with a remote or on site switch so it's hard to fathom what's wrong with limited info----it's like trying to cut hair over a telephone

You have to press the button on the remote 3 times allowing for the little delay that comes with remotes. the wall switch is easier because it is wired directly to the opener. you will also find it sometimes works easier if you start with the door all of the way down.

i would look for a shorted out wire to the wall button. maybe a staple thru the wires shorting it out. cold night and warm days expand/contract wires and staples and make a connection.

No. New technology requires the new remotes and keypad.

My first question is, have you checked your spring? 95% of the time when we at AGS - Home Services, Garage Door Division hear this complaint it is because the spring is broken. If not, then check to make sure nothing is obstructing the door's travel, make sure your lock is not engaged, make sure you have nothing stored around the tracks of the door. Then check your force setting, it should around 4-7. If it's low, increase the setting and see if that helps. If it does, then you need to have a garage door technician come and adjust your springs as they are set too heavy. Then they can readjust the force once the springs are corrected. Good luck.

You need to check your sensors first. If they are lit and aligned, increase your down force. Have you recently had the springs adjusted or serviced by a garage door tech? If so, force probably needs to be adjusted and the tech failed to adjust it accordingly. If not, one of your sensors is probably misaligned which is usually the problem.

Erase your codes in your opener by holding the learn button in for a count of ten. Then try programing the remotes. When a opener has to many codes it will allow one then boot another one out.

Sounds like a broken or disconnect wire. At least start their. Unplug operator. Take the cover/shroud off, using a bright flash light check all the wires for breaks or disconnects. Repair or reconnect. Also check the bulb screw housing are connect on the back side.

does the door have a sensor strip in it so when the door hits something coming down it stops and goes up maybe something stuck to pad? just a thought