Quote:
Originally Posted by sambam
With a bran new unit like yours, the seal is clearly not worn out, so maybe an obstruction. If you have a Thetford, I've heard stories like Jimmy's before. We have the Dometic in our 2010, which has been very dependable. I don't know why a manufacturer would make these changes, other than to build the unit cheaper. If it ain't broke, don't fix it.
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I have. Thetford model 42070, ceramic bowl. Sometimes it holds water and sometimes it doesn’t. If you use a round toilet brush and clean the rubber seal good and keep at least 3in of water in bowl, it usually stays.