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Old 04-20-2018, 05:33 PM   #1
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Brand: Thor Motor Coach
State: Tennessee
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THOR #8845
Ace 29.3 overhead bunk problem

Can anyone tell us the location of the bed controller? Our 2017 Ace 29.3 overhead bunk is twisted and will not come down. Is there Manual way to lower it? Thinking there might be a controller somewhere with an error code. Any ideas are appreciated!
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Old 04-21-2018, 10:39 AM   #2
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I really can not help even though I have the same unit. The only "controller" I know of is where you put the key in to move bunk up and down. I think this is a call Thor problem.
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Old 04-21-2018, 11:34 AM   #3
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Originally Posted by be happy View Post
I really can not help even though I have the same unit. The only "controller" I know of is where you put the key in to move bunk up and down. I think this is a call Thor problem.
Thank you. Think you are probably right. I will have to call them. Hope we can fix it ourselves. Hate taking it in to CW for service.
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Old 04-21-2018, 12:03 PM   #4
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I hate it when some one asks me a newbie question,but; did you try running it back up first? In our Hurricane the controller is in the small storage compartment above the drivers seat. I think you have those cabinets as well. Good luck!
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Old 04-21-2018, 12:04 PM   #5
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If you have cabinets above the driver, might be there. Small white box maybe 4 inches by 3.
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Old 04-21-2018, 12:45 PM   #6
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Sadly we can't get the bunk down to look. Bed twists so it hits on the side of the side cabinets. We hear both controllers some of the time are working. The right one seems out if sync. Problem is it won't sync going up (even doing small movements) and the bed jams coming down. Was hoping if there is a controller we could get to it.
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Old 04-26-2018, 10:33 PM   #7
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Overhead Bed Problem

I am experiencing the same problem...also on a 2017 ACE 29.3. This sounds like it is an engineering/production defect. I wonder if Thor is aware of this situation. I have only had the bed down twice and on our 3rd try it exhibited the same symptoms you described.
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Old 04-26-2018, 10:50 PM   #8
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I just read this from another user with a similar problem....New, first time RV owner here. Driver side bunk slide stuck about 4-6 inches below passenger side exactly as described by others here. Senior Good Sam tech jumped to the conclusion that the Hall effect sensor was at fault and that the motor needed to be replaced. I followed my own advice to RTFMS and found a simple re-sync procedure that fixed the problem. According to the Schwintek manual- Raise the bed as far as it will go (I helped it a bit by pushing the first time). Then lower 1-2 inches, stop and raise as far as it can go then hold the switch for a few seconds. Lower 1-2 inches and raise again. Took me about 5-6 tries and the bed re-sync'ed perfectly. Thereafter always take the bed ALL the way up and ALL the way down- hold the switch a few seconds on both ends of travel to help keep the motors in sync.
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Old 04-26-2018, 11:47 PM   #9
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Smile

Thank you for the information. We did try this but did not work. We will try it again tomorrow. I know this method did fix our slide once when it was out of sync. If it fails to help I will call Thor and post here.
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Old 04-27-2018, 03:47 PM   #10
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Smile Thor Response

Spoke to Jason at Thor today. Great customer service so far. His resolution was it is drop down bed is off the track or a broke wire. It needed to be taken care of by an RV repair person. Since we avoid CW I appreciate I could make an appointment with them for later July. We live in Tennessee but know there are things to visit in that area. Plus want to be sure we get a few things fixed before our warranty is up in August. So Indiana will be our vacation spot this year
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Old 04-27-2018, 05:08 PM   #11
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Re-sync

You have to understand how these dual motor units work. When power is applied both motor are turned on but one motor may turn faster due to the load on that motor. If that does, the bed (or slide out) will move down faster on one side than the other. The instructions for re-sync are to let each motor stall out at the end of travel limited by the seats, bottom limit or top raising limits. I would suggest if you have not done so already to attempt returning the bed to the raised position, maybe helping the stuck side with a little push (while someone else is holding the key switch). If the position is way off to begin with, this will probably not work. Each motor needs to be turning and not stuck for this to work. By pushing on the side that is behind in it's travel, you are reducing the load on the DC motor, allowing it to turn faster.

I am an Electrical Engineer and understand how these systems are supposed to work but I have not had the out-of-sync problem go too far out of line as to get a stuck system. I have noticed that my system normally TRIES to go out of sync. This is why you have to force the motors to go all of the way, up or down, until alignment occurs at the stops built into the system. I do not like to run the motors until they stall in fear of burning out a motor but I think they have a current limiting built in to minimize this issue,,,,at least that is how the slide out motors are protected.

Hope this helps.
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Old 04-27-2018, 07:22 PM   #12
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Originally Posted by edanddonna View Post
Spoke to Jason at Thor today. Great customer service so far. His resolution was it is drop down bed is off the track or a broke wire. It needed to be taken care of by an RV repair person. Since we avoid CW I appreciate I could make an appointment with them for later July. We live in Tennessee but know there are things to visit in that area. Plus want to be sure we get a few things fixed before our warranty is up in August. So Indiana will be our vacation spot this year
We will be there the week of the 16th. Might see you there!
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