Fantastic fan and odor

[Vycan]

Clicker187,

Thanks for taking the time to post this thread. I had no idea the sewer smell with the fantastic fan on was abnormal. I have identified the 360 has two AAV's one at the kitchen sink, and one at the bathroom sink. I inspected both and found them to be oatey 39012 abs AAV's, but neither has anything but an open vent indicating it vents the black tank directly to the under sink areas. I am researching the replacement I want for our next trip, and look forward to many fantastic fan days without the smell.

Thanks!

[LaBigDogs]

On my 2015 27fb I have the same strong sewer smell in the closet. (no smell under the closet) This happens when we travel down the hwy with sewer in the tanks. It is especially bad when the fantastic fans covers are open for cabin ventilation in hot weather. The dealer has looked at it twice and still have the problem.... may have to make the 1000 mile trek to Jackson Center. I don't think its from the grey tank... thinking it from the black tank. Next test is to drain just the grey tank and tow to check for smell. Any ideas? I am thinking that dznf0g may have a good idea.