Wayne Dalton DoorMaster Model BDOr 2000 door will close but then goes back up immediately. How do I adjust it. Nothing is blocking the closure?
The Wayne Dalton Doormaster design is a mess. I've had two of them in my house for 10 years, with numerous repeat problems.
What you are experiencing is a need to recalibrate the door, but the underlying cause is that a linear potentiometer becomes non-linear, and the calibration drifts. Once this starts happening, it will continue to be a problem until you buy a new potentiometer, or clean the one you have. If you are handy, it isn't too hard to do.
Two other Doormaster problems are when the DC electric motor carbon brushes wear sand clog up the commutator, causing the motor not to run. Another problem can be corrosion on the back of the circuit board that causes erratic operation, but can be fixed by scraping the corrosion off the board.
If anyone still is having any of these problems, post here and I'll do a detailed writeup on these fixes.
on Mar 24, 2017