Question about Genie Company Genie Excelerator Down Limit Switch Part 33950s

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Garage door opens an inch then stops. i hit the button again and it closes. then sometimes it wont even respond. can you help me fix this through this chat

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Hi and welcome to FixYa, I am Kelly.
This almost sounds like the door safety optics near the bottom of the door is not working or the optics path is blocked with something. Check the path between the 2 sensors for any obstructions. You may or may not see the red optics light path between sensors as some of these are infra red.

If the path is clear start looking at optics wiring near the sensors and all the way to the opener terminal board for any signs of damage. If all of that appears fine... then your probably going to have to replace the up/down limit switch assy.

Before you get too deep into all of the above... if the door senses a jam as in it has to drive with excessive force it will do exactly as it is now. Bent door rollers... something hanging down from the ceiling blocking door movement in the UP direction.
There really are several things that can cause this:
1. Optical sensors
2. Door limit switch
3. Force adjustment assembly
4. Blockages of optics path or door movement path
5. Stripped worm gear in the opener that has caused the door sequence timing to change on the limit switches.
6. Failed motor drive gear assembly.

Even for professionals some of these can be very time consuming to isolate and repair. (you can tie up as much money in repair labor costs as it would cost to replace the opener. Since you did not indicate how old your unit was or the exact garage door opener model number, the response above is very generic. I am not telling you to replace your opener. Only advising you of what can be high repair costs.

If your not that mechanically inclined I would call a garage door installer and ask that if he can not repair your opener what would be the replacment cost. Negotiate a diagnosis / repair cost vs replacement cost over the PHONE. Explain the symptoms and see what they say. (Call more than one before making a commitment!) Expect to hear all of the answers I mentioned above.

Thanks for choosing FixYa,
Kelly

Posted on Mar 25, 2011

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Wrong forum. But hey, I'll take a stab at it.

It sounds like your door goes so far down, then stops. Then you hit the button again and it goes back up and stops at the top. Then again, and now it goes to the bottom.

Have you tried allpying WD-40 to the entire length of the door runners leading from the motor unit to the garage floor? Have yo cleaned these runners, then done the WD-40? Are your door sensors (assuming you have them) set up and aligned correctly? If not and they both have little lights on them, if those lights are blinking it probably means they are not aligned right (though this problem often results in the door not responding at all).

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