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Old 07-21-2016, 11:07 AM   #1
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Posts: 109
Dometic 18k AC Help


So last week on a four day humid trip I had water leak in from the corner of the main vent where the filter goes in.
I've read the previous posts on the AC issues and was wondering how I can check to see if the unit bolts are tight.
Is this done from the inside of the unit or outside.
Also, how to dismantle


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Old 07-21-2016, 11:33 AM   #2
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Join Date: Jan 2015
Posts: 387
Our Dometic 15k does the same thing on some hot/humid days. I think Domestic says to crack the center vent until it cools off a bit, then run it through your ducts. So it may be normal operation. If you need to get to the bolts, you should just have to pull the inside cover off and should see/tighten them from there. No need to go up to the roof.

From the Atwood user manual:
In areas of high humidity, the humid air within the RV will
cause “sweating” or condensation in parts of the unit as the
humid warm air contacts the colder air discharge system. If
this occurs please ensure the following:
-Closing all doors, hatches, windows and blinds to limit the
ingress of warm humid air
- Avoid running the inside fan on LOW or AUTO in such
conditions. Running the fan on HI fan speed will result in
higher airflow and reduce the tendency to have
condensation form.

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Old 07-21-2016, 05:56 PM   #3
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Thank you very much .......
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Old 07-21-2016, 07:11 PM   #4
Curiouser and Curiouser
Join Date: Mar 2016
Location: Keizer, Oregon
Posts: 55
Had the same issue and was unsure how to address it. Thanks for the tip!
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