Originally Posted by bill5h
I have lost track of exactly the moment it started working in reverse just that it was right after it wouldnít extend and I tapped it.
I am waiting for the new switch to try and see if an old style will work.
YC do you mean use a separate power source to reverse the position of the steps and then reconnect them to the regular wiring? That is an interesting idea. I hadnít thought of it. I will try that.
A separate power source will work but you have power coming to the controller and probably can unplug that and use some sort of jumper to activate just the motor.
I am almost certain I had to do this several years ago. Changing a switch to something else makes no sense at all to me.
The controller does not really know if the thing is in or out. It just runs power one way or the other and when the current climbs up it quits trying to run the motor. At least that is how I think it works.
These motors are electric window motors and I have never seen any limit switches installed. I'm sure there are some out there but having a circuit that sees a certain voltage level climb could easily be a sense to turn things on or off.
You have got to be incredibly careful running the thing in and out. I took mine down a couple of times. Mine is held up with four bolts and easily drops with the use of a small jack. Two people can do it but a jack is really easy.
With it lying on its side you can safely apply power to the motor to test it going in and out. If you take it out, take every nut and bolt off one at a time to inspect. I had one shear right off one day. There may be some brass bearing in there too so its a good time for a real clean and light lube. I have replaced all of my bolts with higher grade ones.
You can do a lot of checking with it out and can make sure that you have it in the in or out position that would relate to your door being open or shut.
That is, your switch near the door is set for automatic and the door is open, then the steps should be out when you reinstall them.
Hope this makes some sense.