Blaise
Well-known member
We have a relatively new 5th wheel - a 2023 Grand Design Reflection 311 BHS that we purchased in Sept of last year. This rig has 1 and 1/2 bathrooms, 2 black tanks (one for each bathroom) and 2 gray tanks (one for the kitchen sink and one for the main bathroom sink and shower). The gray water from the 1/2 bath sink and the outside kitchen sink both go in the second black tank.
We have taken it on a few trips, but we've always had city water - never really had the occasion to use the water pump. Well, I sanitized for the upcoming season today. I put 5 gallons of chlorinated water in the fresh water tank via "power fill" - connected one end of a hose to the city water inlet, the other end in a 5 gallon container with the bleach solution, and used the water pump to draw the water into the fresh water tank.
I then connected the city water to a hose bib and proceeded to fill the fresh water tank. When I saw the tank was full, I changed the valves from "power fill" to "city water". I did this because the hose bib is pretty far away and I didn't want to run over there to turn the water off. I figured while set for city water, water would only enter the system if a faucet was open. By mistake, I went around and ran water in the sinks/shower/toilets, but because the system was set to city water, the chlorinated water in the fresh water tank was not being used.
SO ... I turned off the hose bib, turned on the pump and ran the chlorinated water from the fresh water tank through every thing again. I noticed that even when nothing was open, the pump never went off. Thought I had a serious leak, but I could see no other sign of it. Then I noticed that the 2nd black tank was 2/3 full. I know I emptied and rinsed all the tanks for winterization in the fall.
The pump is still running - never going off - while I'm thinking about this and looking for a leak - but then I saw that the 2nd black tank was now FULL. I turned the pump off and scratched my head ...
I DEFINITELY did not connect the water hose to the blank tank flush inlet. (1) water was coming out of the faucets, and (2) the black tank flush inlet for the second tank is nowhere near the fresh water inlet.
I also did not run anywhere near enough water in the outside kitchen and half bath sinks to fill the 2nd black tank (it hods 40 gallons).
I am at a loss to understand what the heck is going on. The 2nd black is now VERY full - if you open the toilet flush valve (with no water pressure) you can see the water level in the tank - right up to the neck of the pipe going into the tank.
Anyone have a theory about what I'm facing here? In the mean time I have to go remove some water from that 2nd black tank!
![Nautilus-Water-Control-Console.jpg Nautilus-Water-Control-Console.jpg](https://www.rvforum.net/data/attachments/87/87493-6ac29addd4ddf47a084c370e51bd0921.jpg)
![Tank-Flush-Inlets.jpg Tank-Flush-Inlets.jpg](https://www.rvforum.net/data/attachments/87/87492-7cb410c9069eb098d3e9e8de9110418b.jpg)
We have taken it on a few trips, but we've always had city water - never really had the occasion to use the water pump. Well, I sanitized for the upcoming season today. I put 5 gallons of chlorinated water in the fresh water tank via "power fill" - connected one end of a hose to the city water inlet, the other end in a 5 gallon container with the bleach solution, and used the water pump to draw the water into the fresh water tank.
I then connected the city water to a hose bib and proceeded to fill the fresh water tank. When I saw the tank was full, I changed the valves from "power fill" to "city water". I did this because the hose bib is pretty far away and I didn't want to run over there to turn the water off. I figured while set for city water, water would only enter the system if a faucet was open. By mistake, I went around and ran water in the sinks/shower/toilets, but because the system was set to city water, the chlorinated water in the fresh water tank was not being used.
SO ... I turned off the hose bib, turned on the pump and ran the chlorinated water from the fresh water tank through every thing again. I noticed that even when nothing was open, the pump never went off. Thought I had a serious leak, but I could see no other sign of it. Then I noticed that the 2nd black tank was 2/3 full. I know I emptied and rinsed all the tanks for winterization in the fall.
The pump is still running - never going off - while I'm thinking about this and looking for a leak - but then I saw that the 2nd black tank was now FULL. I turned the pump off and scratched my head ...
I DEFINITELY did not connect the water hose to the blank tank flush inlet. (1) water was coming out of the faucets, and (2) the black tank flush inlet for the second tank is nowhere near the fresh water inlet.
I also did not run anywhere near enough water in the outside kitchen and half bath sinks to fill the 2nd black tank (it hods 40 gallons).
I am at a loss to understand what the heck is going on. The 2nd black is now VERY full - if you open the toilet flush valve (with no water pressure) you can see the water level in the tank - right up to the neck of the pipe going into the tank.
Anyone have a theory about what I'm facing here? In the mean time I have to go remove some water from that 2nd black tank!
![Nautilus-Water-Control-Console.jpg Nautilus-Water-Control-Console.jpg](https://www.rvforum.net/data/attachments/87/87493-6ac29addd4ddf47a084c370e51bd0921.jpg)
![Tank-Flush-Inlets.jpg Tank-Flush-Inlets.jpg](https://www.rvforum.net/data/attachments/87/87492-7cb410c9069eb098d3e9e8de9110418b.jpg)