Filling fresh water tanks

[JSabe07]

We just recently purchased a Jay Flight 33RLDS. We are going dry camping for the first time in this trailer for the Dover NASCAR race. We were sanitizing our fresh water tanks using the gravity fill with a hose. It would run for about 10-15 minutes so we assumed it was filling. Shortly after, the overflow tubes began pouring water. We turned off the hose and checked the monitor panel and the tanks read empty. What step did we miss? The overflow tubes poured out water as if it was draining the tanks? Could we have bad sensors?

Please help if possible!

[Threebutchers]

was the 12V system or system monitors working otherwise?

[JSabe07]

Yes the last time we camped all other sensors were functional. Have not filled water previously. We've always had a city water connection at campgrounds.

[Threebutchers]

If your other 12V and system sensors are currently working, check the pump switch to see if you have water at the faucets....if so - it sounds like you have a fresh water sensor issue.

[JSabe07]

Just opened the low point drain plugs and water is still flowing out. We had to have had water in the tanks, but a faulty sensor in the tank. Right?

[Threebutchers]

Usually, the fresh water tank has its own drain....the "low point" drain will drain water from the plumbing (which is isolated via check valve from the freshwater tank). Check the pump / faucets next.

[Jagiven]

I’m not familiar with your unit. If you have an open underbelly, you can look under the TT, usually between the axles is the fresh water tank. You can see through the tank, to get a visual on your fresh water tank level. In addition you will see the level sensor wires. You should also be able to see the tanks drain tube and the overflow tube.

[33 RLDS]

Our 33 RLDS has the thermal package so the bottom is sealed up but we have 2 drains with valves near where the filler is. I assume one for each fresh water tank as I am told we have 2 40 gallon tanks to make the 80 gallons advertised...