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Old 06-28-2020, 01:59 PM   #1
Desert Dog
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Sewer smell help

My Premier TT 31BKPR is a couple years old and I have had off and on issues with sewer smells since I bought it new.
It's never been this bad, but I am getting a horrible smell inside the camper at the bathroom. I am also getting a bad sewer smell outside near the tongue. The smell inside mostly occurs when we run the A/C during the hotter portion of the day, then goes away after turning off the A/C and opening the windows. The outside smell persists at all times.

Any suggestions on where I should start first to figure this out? Thinking about dropping the coroplast underbelly, but figured I would throw it out here first. Plus its 105 in Arizona today and I am not excited to get started on this foul problem.
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Old 06-28-2020, 03:03 PM   #2
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LINK TO UTUBE

https://youtu.be/E731e8asMyI
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Old 06-28-2020, 06:33 PM   #3
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Quote:
Originally Posted by Wyldfire View Post
I was thinking about the air admittance valve and figured it would be an easy and cheap thing to try. Would this also explain the odor outside also? It seems to specific at the front of the trailer to be flowing down from the roof vent.
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Old 06-28-2020, 07:26 PM   #4
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Have you checked the water level in the battery? A battery that's boiling out the electrolyte will emit a sulfur smell that can be very strong.
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Old 06-29-2020, 08:17 AM   #5
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Have you checked the water level in the battery? A battery that's boiling out the electrolyte will emit a silver smell that can be very strong.
I will double check that, thanks!
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Old 06-29-2020, 08:30 AM   #6
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That was sulfur smell not silver, darned spell check!
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Old 06-29-2020, 08:39 AM   #7
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A small propane leak can also smell like sewer gas.
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Old 06-29-2020, 02:48 PM   #8
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Outside? Are you certain that your batteries aren't boiling?
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Old 07-01-2020, 04:02 PM   #9
Desert Dog
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Quote:
Originally Posted by flybouy View Post
Have you checked the water level in the battery? A battery that's boiling out the electrolyte will emit a sulfur smell that can be very strong.
Quote:
Originally Posted by Customer1 View Post
Outside? Are you certain that your batteries aren't boiling?
Looks like you two called the outside smell, THANK YOU! Batteries were indeed low; I didn't know they made that smell when things were overheating. Water wasn't below the plates, so hopefully they did not get damaged. I will definitely be keeping better tabs on them.

I am still suspecting the toilet for some of the inside smell. I will update when I hear back from Dometic.
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Old 07-01-2020, 05:28 PM   #10
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There was a batch of Dometic 300 toilets that were recalled.
https://www.rvtravel.com/got-a-smell...e-the-problem/
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Old 07-02-2020, 05:33 PM   #11
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Spoke with Dometic today and they are sending me a replacement toilet under the 2yr warranty. They offered an upgrade to the 310 model for $75 shipped, so I took that offer. Hopefully between the battery water levels and the toilet, my foul smells will be gone! Thanks for all the input!
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