Chamberlain Garage Door Opener Programs Backward

jtinpaMarch 14, 2009

I have a Chamberlain hd900d belt drive operator. The logic board went bad and chamberlain gladly sent me a new one covered under warranty. I installed it and now when I try to program it it appears to be working backward. That is, the black button is supposed to adjust the up limit and the blue button should control the down limit. they work opposite of that. Also the safety sensors reverse the dooor when the are obstructed but they do it when the door is going up and the door reverses and comes down instead of the other way around. I have checked the plugs connected to the logic board three times and everything appears to be correct. Does anyone have an answer for me? Chamberlain tells me that the board may be defective and they are sending me another. What are the odds of the new board that they already sent me being wired backward? Am I doing something wrong?

Thank you for reporting this comment. Undo
don_1_2006

I don't see how you could have done anything wrong. Sure is a strange problem though.

    Bookmark   March 15, 2009 at 3:23PM
Thank you for reporting this comment. Undo
jtinpa

I got creative. I reversed the motor plug with a little help from a knife to remove the tit that prevents the plug from being put in backward. Works like a charm! Bizarre but everything is now programmed and my door works great. Since the motor is DC simply reversing the polarity did the trick.

    Bookmark   March 15, 2009 at 5:19PM
Sign Up to comment
More Discussions
Need error codes for Craftsman 41A4315-7D.
Need error codes for Craftsman 41A4315-7D Garage Door...
don831
Garage Door Exterior Lighting Help Please
Hello members, On the exterior, do you prefer lighting...
pippit
who makes a 10x8 "Carriage House" style garage door?
Perusing the websites of most of the major garage door...
Daniel501
Need Help with My SnowBlower
I just recently bought a Craftsman 24" snow thrower,...
bdouble
garage door remote opens but wont shut door
I have a 10 year old Craftsman garage door opener model...
Junky
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™