Winnebago holding tanks

brioaz22 wrote:
My 12013 Winnebago 35G tank monitoring system says that I have 2 holding tanks for both gray and black water. However, when I check the level of the tanks only one tank of each registers. When the first tank is full the second tank never fills. So are there two tanks for gray and two tanks for black or only one tank for each? Anyone out there know the answer?

Thanks

The 2013 Sightseer 35G uses a different tank monitoring system than some previous year models. Rather than a set of indicator lights for each tank it has a digital display as shown on page 4 - 5 of the owners manual

http://winnebagoind.com/resources/manuals/pdfs/Operator2013/13Sightseer.pd


The monitoring display shows four tanks, but they're not all black and grey water. In order from top to bottom the displays are:

The top line on the display is Fresh Water
The second Line from the top is LP Gas
The third line from the top is Gray Water
The bottom line is Black Water

The water tanks (fresh, Gray, & black) read in 1/3 increments i.e. 1/3, 2/3, Full.

The propane tank reads in 1/4 increments i.e. 1/4, 1/2, 3,4, Full

There is no mention of dual gray or black water tanks in any Winnebago publication I can find. Neither the advertising brochure, the owners manual, or the plumbing diagrams indicate there is more than a single gray and black water tank. Going from the plumbing diagrams available online no Sightseer model for the 2013 model year came with dual gray or black water tanks.