2011 Sportscoach black water system.

[VernonLee]

I bought this unit two months ago, we have had a terrible time with the commode clogging, we were told at the dealership, General RV in Jacksonville, it was a design flaw in the tank, they said the tank is an L shape with the tank only six inches from the bottom of the commode, it will clog on anything, I try leaving the tank nearly full but then it will run over in not time at all, General agreed to install a maserater commode at no cost, but we have been waiting weeks for the danged thing to be delivered and installed. its really aggravating to have a beautiful motorhome that can't be used, I'm sure there are some who know how we feel. I forgot to mention the wrong commode was delivered, the old one taken out of the motorhome before the box was opened that contained the new commode, the wrong commode had been shipped, so, they re-installed the old commode using the original washer on the bottom, something that anyone who has done any kind of plumbing knows should never be done! so now the water runs out the bottom of the commode into the storage box below that should contain the outside commode, I'm glad I took it out beforehand.
I'm wondering how many others are having this problem with their 2010/2011 Country Coach, Sports Coach??

Vernon/Anne, on the road again soon..

[CarlAda]

Your coach is made by Coachman, not Country Coach. Good luck!

[VernonLee]

Thank you Sir.

[nothermark]

FWIW our coach has a flat tank with a side entry for the commode not far below the floor. No problem. That would leave me thinking you are suffering from a version of the pyramid of poo common to folks who did not manage their tank correctly.

You can search for the problem and get many answers. What it comes down do is that the liquid runs away faster than the solids in a flat tank. If one leaves the black tank slide valve open when attached to a sewer the solids collect into a semi dried out chunk that blocks more input. The answer is to load the tank with water, detergent, and maybe a softener like Calgon. Let it soak from overnight to weeks then dump. Rinse and repeat a few times. Otherwise always close the dump valve and let the tank fill then dump in one shot to keep things flowing.

You might be able to use a plumbing snake to break up the pile after it soaks. Most of the wands are designed to go straight down. You might also want to invest in a clear elbow to see what is coming out. There are some Youtube videos out there to show more.