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  Garage door reverses when it hits the floor
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Garage door reverses when it hits the floor Sign In/Join 
Picture of weakestlink
posted
I have had no problem with my Lift Master garage door opener, but yesterday when I went to put the door down, it went back up as soon as the edge reached the floor. I cleaned the electronic "eyes" and tried several times, but it still continued to reverse when the door edge contacted the floor. After about 8 tries, it finally stayed shut, but now I'm concerned if will it continue to do this. Any suggestions as to what to try if it happens again? (note - I'm a 60 year old woman without much knowledge about electronic gadgets). Thanks.
 
Posts: 544 | Location: upstate New York, USA | Registered: Mar 15, 2007Reply With QuoteReport This Post
Picture of Sparky
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If the eyes are clear it could be binding on something on the way down or it could need the down-force adjusted. Do you have your instruction manual? If not, try going to their website with your specific model and see what adjustments you can make.

Liftmaster Link

This message has been edited. Last edited by: Sparky,


General Disclaimer

Any advice given here is general in nature and is not necessarily valid for your given area. If in doubt check with your local codes enforcement department for what is required when doing electrical, plumbing or structural work on your house. Permits may or may not be required in your area and home owners may not be able to DIY some tasks. I have no way of knowing if you have the skills needed to complete the tasks you are asking about, when in doubt seek professional assistance.

My advice may be worth exactly what you pay me for it. :-) For the record I did not stay in a Holiday Inn Express last night.

 
Posts: 6658 | Location: Cary, North Carolina | Registered: Sep 18, 2002Reply With QuoteReport This Post
Picture of conrad
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I would guess it's the down force adjustment too. Usually there is a screw (or knob) on the motor (ladder and screw driver necessary) with this down force marked with an arrow direction. The direction the arrow points is the way to (increase) the down force. You probably need to reduce it a bit. Just turn it (the opposite) direction of the arrow a quarter turn. If it still does the reverse when closed, another quarter turn, check and repeat till it stays down.
 
Posts: 8537 | Location: Plains & Mountains | Registered: Jun 08, 2003Reply With QuoteReport This Post
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While I agree with all that has been said, I want to tell you about our experience.

At a certain time of the year and at a certain time of the day, the sun hits the eye and the opener behaves as you describe. It is only a few days a year and only for about a half hour or less each day. If we really need it closed during that time we hold a piece of cardboard so it blocks the sun from the eye. Usually we just wait a short time and try again.
 
Posts: 5970 | Location: North MN & Northern AR | Registered: Oct 01, 2002Reply With QuoteReport This Post
Picture of conrad
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That is interesting, metwo.
Guess the sun light angle (or something it reflects off of) actually creates the closed circuit in the electric "eye" of the safety feature?
 
Posts: 8537 | Location: Plains & Mountains | Registered: Jun 08, 2003Reply With QuoteReport This Post
Picture of Sparky
posted Hide Post
I know this is digging up an old post. Metwo's situation can be corrected by flipping the two sensors. Move the one that is currently in the sun to the other side of the door and put the one on the shady side of the door in the sun. When I installed my GDO they mention this as a problem/fix. The two sensors are not the same, one is a transmitter and the other is a receiver. If the receiver is in the sun it can be overwhelmed by the sun and not work.


General Disclaimer

Any advice given here is general in nature and is not necessarily valid for your given area. If in doubt check with your local codes enforcement department for what is required when doing electrical, plumbing or structural work on your house. Permits may or may not be required in your area and home owners may not be able to DIY some tasks. I have no way of knowing if you have the skills needed to complete the tasks you are asking about, when in doubt seek professional assistance.

My advice may be worth exactly what you pay me for it. :-) For the record I did not stay in a Holiday Inn Express last night.

 
Posts: 6658 | Location: Cary, North Carolina | Registered: Sep 18, 2002Reply With QuoteReport This Post
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