An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert whose answer got voted for 20 times.
An expert who has answered 20 questions.
Re: door reverses about 1 foot from floor.
You can overridride by pushing and hold wall button. If the door goes down and reverses up about a foot from the floor it could be a force setting issue on the opener or an issue with the door. First, pull the handle on the opener and operate the door manually a few times to make sure it opens and closes freely. You should be able to open and close the door with one hand or there is a problem with the door. If you determine that the door is ok then look at the force setting knobs. They are located on the back and have numbers from 1-10. These should be set on about 4-5 for the upforce and the downforce. I hope this helps.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
The sensors are okay. It sounds like your door may be traveling too far in the down direction, hitting the floor and reversing. If this is so you can adjust the 'down limit' control located on the side of the motor unit. Turn this control just a tad in the opposite direction of the arrow printed on the cover. Some tweaking may be necessary to get it just right.
Check the sensors again. Our unit has one amber and one green when
working and if something (even a weed) breaks the optical beam it
reverses and the lights blink. We've also had bright sunlight interrupt the beam. (The test for this issue is to stand such that you cast a shadow onto the sensor without being in the beam and then attempt to close the door with the remote). Next check if the door is binding during travel. If it is, check the tracks for plumb with a level and make sure the door rollers and tracks are undamaged. If a rail is crimped anywhere, it could be cause the problem. You can find some garage door sales places that sell the track sections and rollers
to replace damaged parts. Check your local phone book and call around. In some cases, the door jamb may be damaged (lowering the header and shrinking the entire door area). This may require calling a professional to fix.
If the door itself is moving easily, then it sounds like the door might be hitting the floor too lightly or trying to go past the floor and triggering a safety reverse. On most of the openers, there are several adjustments you can work on to reset this. First try adjusting the down limit to above the floor and then bring it back to the floor. (However, usually these do not make the opener light blink.)
Alternatively, adjust the downward force to a higher value.
Without knowing the model of your Craftsman opener, I'll just use the directions for mine. All of these are adjusted with a flat blade screwdriver. Always test each adjustment with a complete up and down cycle.
The height limit control is on the side. (It's the forward one of two screws inside the cover - you should be able to reach them thtrough holes in the cover. Unfortunately, sometimes it's easier to get to them after removing the cover. The cover is held by 4 screws - 2 on each side.) To decrease the travel, turn the Down screw clockwise. One full turn of the screw is 2" of door travel.
The force controls are on the back with the down adjustment on the right. Turn this clockwise in 10 degree increments and test each time.
It is possible to overheat the opener with too many open and close cycles. In that case stop adjusting the unit and wait 15 minutes for it to cool.
Any time the main light flashes 10 times and the door reverses to the open position it is a door sensor problem. Check them closely. If one of them is flickering ever so slightly it will cause this problem. Also make sure they are fastened securely so that they are not moving when the door closes.
If the main light flashes 10 times when the door reverses it is a sensor problem. Make sure the door isn't hitting the floor and then reversing. This problem will not cause the light to flash 10 times and can be corrected by adjusting the 'down limit' which is on the side of the motor unit.
If when it does this your main light flashes 10 times it is the door sensors. Make sure they are aligned properly. If the main light doesn't flash 10 times then you most likely have a bad RPM sensor board. It is a small printed circuit board just in front of the motor.
What it is is the electric beams at the door are getting blinded buy the sun or out of line. They are the two black boxes on both sides of the door about a foot from the ground. Put a piece of card board in front of them not blocking the beam dut to block the sun. All that they are is safety beams for kids so they do not get hurt. If you have to move them to the top where the sun will not hit them. Sorry to say though you can not remove them all the way. Also make sure the lite on them is not blinking if so they are out of line.