grey tanks

[psb retired]

I have a 2011 flagstaff 831fkbsss,after dumping my tanks,the panel showed the front tank showed 1/3 level,figuring it was an error,drove home,nowthe rear tank showed 1/3,i forgot to say these are the gray tanks I put a bucket at the dump valve and got 10 gal of water.my question how does the drain piping run from front to back,seems like that line is plugged somewhat.ihave the enclosed underbelly so I would like a idea of what to look for before I start removing the enclosing material thanks for any help

[RSchleder]

Unfortunately, what you are experiencing is perfectly normal when it comes to the reading on all your RV tanks. The sensors inside the take can stay wet for extended periods of times giving faulting readings. Use your take monitor system as a guide only, when viewing any reading on any tank, take it with a"grain of salt" and don't worry about it!

PS- if you got 10 gal of gray water out after "draining" your gray tank, you either shut the dump valve too soon OR you were sitting at a different angle during your second dumping that allow more water to exit the tank. IMHO, after owning 12 different RV's and camping for 30 years, your way too worried about this situation.

[psb retired]

thanks for the reply,iknow the lights are not always right,but this is the first time this has happened and I bought this unit new,it wes at a level dump station and I had plenty of time as no one else was their,still would like to know if anyone had this problem

[RSchleder]

Let me add one more thought. When the trailers are manufactured the holes cut in the floors for all/any tanks are typically allowed to simply fall down into the tanks. I know, makes absolutely no sense at all. These floor "pieces" in the tanks can actually do as you experienced, get positioned over the tank drain where it attaches to the drain pipe and partially or temporarily stops the flow of water. I actually had a floor cutout chunk wedge in one of my gray water valves and had to disassemble the valve to remove it.
After I reread your original post and your latest info, I believe this may be what happened to your unit. You may or may not ever have a issue again. I'd wait and see if it's an ongoing problem before doing too much investigating by dropping your bottom covering, etc. Good luck, hope this helps!

[psb retired]

thanks for that info,makes sense,thought I might pour 5 gal. of water in the kitchen sink and see what happens.will keep you informed