Holding Tank Filled Overnight

Your Minnie has a 41 gallon fresh water tank that Includes water in water heater.
A black tank capacity of 35 gallons
A grey tank capacity of 38 gallons


Level indicators are junk (not just yours but majority used in rvs)

Please explain .......toilet would not flush.
Do you mean no water would come out
OR do you mean tank was so full that water was up to bottom of toilet.


Your bathroom sink MAY drain into black tank. Some are set up that way to extend grey capacity and provide more water to black.

Sounds like you just used more water than you realized.
Water running while washing hands, brushing teeth, combing hair, washing your face etc........shows up FAST because you have to collect it/dump it.

Showers? Lots of water if left running.
Dishes? Lots of water if left running to rinse.

Everyday habits at home show up when RVing.


2001 Minnie Winnie Brochure........LINK

Are you sure you had your water hose hooked up to the right city water connection and not to some type of tank flushing connection ?
My Itasca MH has two side by side hose connections, one for city fill, the other for tank fill. The second time I used the MH I mistakenly hooked the fresh water hose to the tank fill, instead of the city fill. I went off for a while and when I got back to my site a neighbor told me water was leaking from my MH. Only took a couple of seconds to figure out what I had done wrong. Fortunately the overflow on the fresh water tank worked as it was supposed to and nothing happened to the MH, with the only issue being God only knows how much water was wasted.
I've had a number of RVs and this is the first that didn't have a gravity feed fill for the fresh water tank and a screw on connection for only the park water connection. Just a few seconds of not paying attention in my case, since I've been hooking up hoses forever, resulted in me hooking up to the wrong connection. :o

Any idea how much fluid actually came out when you dumped? How long did you hold the valve open when you flushed?

If the tanks were really that full when you dumped you either used a lot of water when you flushed or you have a leaky valve, but even a leaky valve should leak into the bowl, not into the tank.

gauges are worthless as said ,we keep a flaslight in the cabinet and look down the hole ,your blk tank could be full if a faucet leaks or your flush unit leaks. all in the fun in learning about your camper.

You say you were hooked up to campground water. Perhaps the spigot was shut off where you were hooked up to the water.

When, you say, the toilet didn't flush could you still get water to come out of the faucets in the sinks?

Did you have water in the fresh water holding tank? Was your on-board electric water pump turned on?

By the way those gauges to indicate the level in the holding tanks never work right. We haven't looked at our gauges for ten years now. We determine the fullness of our tanks by how much we have used the toilet and ran water in the shower and sinks.

Toilet would not flush? What does that mean?

Level indicators are notoriously inaccurate. If this was your first trip of the season all of the sensors should've been dry to start with. If there was any TP on the sensors in the black tank, that would've gotten wet after a few flushes.

Does your bathroom sink drain into the black tank? What are your tank capacities?