Yes it has happened to me. I did a post on this back in May of 2013. I copied and pasted my experience. below. Very scary. I did turn out to be a bad remote control, had nothing to do with the jack itself. It is also a Rieco system and when I first called them I also got "we have never heard of this happening before" but after further investigation that was BS. Let me know if you would like more info.
I did search on this but could not find anything.
Have a 2013 AF 990 bought new in January. While trying to load the camper to come home late this morning I the pushed the 2 front lift buttons to raise front of camper. When I released the buttons the front left jack would not stop, CAMPER JUST KEPT GOING UP! TALK ABOUT PANIC! I have a very good mechanical aptitude but all I could think of is to keep pushing buttons but nothing seemed to stop the jack from raising. Just as camper was getting way out of shape I thought about the plug on each jack, so I unplugged that jack from the camper which did stop it.
Has anyone had this happen? I will call dealer in morning to see what they have to say but I wanted to post this so everyone will be aware of what can happen. If I had heard of this happening I would have known what do do immediately. It was a scary experience. Some times I have my wife lift camper and get it ready to load while I'm doing other things. If she would have been doing this and I was not around, I do not know what the outcome would have been, but it would not have been good
Called the dealer service department and he said he had heard of it before and was most likely the remote control. He said he needed the remote serial number and would get a new one ordered. I decided to call the manufacturer to get their take. I got the "I don't believed I had heard of that before" and was told it was most likely the remote. I gave her the serial number of the remote and they are sending me a new one.
When I got the remote out of the camper to get serial number I tried to make it do it again but the remote would not do anything so I believe the remote just kept sending a signal and discharged the battery in the remote. I will get a new spare remote battery, put it in the old remote and make sure that was the problem. I will post later on what definitely was the problem.
When this happened I had never dreamed that one jack would just keep lifting camper up. Like others have said the battery disconnect was under the sink and I am not going in a camper that might flip over or fall any minute. And the remote has no power off switch and there are 4 screws you have to remove to get to battery. So the only quick option you have is to unplug the jack or jacks.
This is just one of those things that now that you know can happen, you can be a little prepared to keep from having a major catastrophe.
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