Originally Posted by Steve N Sal
When ours acted like you describe I discovered a bad ground connection. Cleaned it up and now they work perfect.
So today I decided to repair the steps, got my stuff ready, carpet to lay on, flashlight, eyewear on, crawled under to have a look and I see the ground wire going up and disappearing into a big gob of foam. Figured I would just splice into it it and then it started to rain, making a puddle right where I was so I decided to leave it for another day and went to have a look at my non working HWH leveling system