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Old 05-19-2013, 11:39 AM   #1
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AC Vibration

Has any onh!e noticed any excessive vibration from the main AC in your 320RS? We are on our shakedown trip and it seems that the AC vibrates more than any other I've had. Whille laying on sofa you can really feel it. even when in bed on the other end. Never had one that vibrated this muc
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Old 05-19-2013, 11:49 AM   #2
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Has any onh!e noticed any excessive vibration from the main AC in your 320RS? We are on our shakedown trip and it seems that the AC vibrates more than any other I've had. Whille laying on sofa you can really feel it. even when in bed on the other end. Never had one that vibrated this muc
Had that problem one time and after taking the cover off the roof unit, discovered a mud dauber nest on one of the blades. After taking the blade off, cleaning & re-installing it, the problem disappeared. On our new trailer, I took the cover off and put screen wire from the coil to the fan housing completely enclosing the open area to prevent the mud daubers from nesting. Did/does not hamper the ac unit, it works great.
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Old 05-19-2013, 12:02 PM   #3
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There was a problem with the front AC units vibrating on the earlier built units, but they came up with a fix involving rubber mounts.
Your dealer shouldn't have much problem figuring out what's causing the rear AC to vibrate. They'll probably turn it on, get on the roof, and start touching things such as lines, wiring harnesses or brackets to determine what's transferring to the frame.
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Old 05-30-2013, 07:32 PM   #4
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AC Vibration update

The LR AC unit on my 320RS was vibrating so much that you could feel it throughout, even while in bed. Today my dealers service dept checked it out and found that the shaft on the blower motor was bent causing the vibration. New blower motor on order. Just wonder if Dometic's quality control was asleep!!!!! At least my dealer has really been helpful. Still really like my 320!!!!
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Old 05-30-2013, 07:35 PM   #5
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The LR AC unit on my 320RS was vibrating so much that you could feel it throughout, even while in bed. Today my dealers service dept checked it out and found that the shaft on the blower motor was bent causing the vibration. New blower motor on order. Just wonder if Dometic's quality control was asleep!!!!! At least my dealer has really been helpful. Still really like my 320!!!!
As a follow up, FR AND the dealer should have caught it also. It could have been bent after it left Dometic.
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Old 06-03-2013, 12:57 AM   #6
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I am having the same issue with mine. I too think its a bent shaft. I will be heading off to the dealer when we get back from this trip. Let us know how the fix turns out.
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Old 06-04-2013, 10:21 PM   #7
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I am having the same issue with mine. I too think its a bent shaft. I will be heading off to the dealer when we get back from this trip. Let us know how the fix turns out.
SargeW
AC Vibration update
New fan motor and fan blades replaced today, checked it out while still at the dealers. No more vibration from the AC and I think it runs just bit quieter also. Will be leaving Thursday for an extended outing so it will get the real world test!!

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Old 06-05-2013, 12:30 AM   #8
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Thanks for the update. I have high hopes that the dealer will be able to get me the same results.
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Old 06-17-2013, 07:39 PM   #9
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AC Vibration (again/still) UPDATE

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SargeW
AC Vibration update
New fan motor and fan blades replaced today, checked it out while still at the dealers. No more vibration from the AC and I think it runs just bit quieter also. Will be leaving Thursday for an extended outing so it will get the real world test!!

Happy Camping
Have been out for a couple of weeks now and after about three days of use my AC resumed the vibration that the above fix was suppossed to take care, if the shaft is bent on this one i think a new unit in total is in order. Something is causing the shafts to become bent. Will update after we get back from our trip to ND. Will be back to my dealer by end of week


Happy Camping!!!!
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Old 06-18-2013, 12:51 AM   #10
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Bummer.........
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