Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener
I was closing my garage and stopped it halfway as i only wanted it to stay half open to allow ventillation. It made a horrible noise. now the drive limits got erased. I've tried to adjust the limits with the screws but it is not registering.
Have NO IDEA what you are saying. Do you mean you adjust limits and chain moves too far? Or is chain not moving. Bad gears. Toss unit unless you are handy and can rebuild gears.
Posted on Jan 14, 2009
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Posted on Jan 02, 2017
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