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Old 08-21-2019, 07:12 PM   #1
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Brand: Thor Motor Coach
Model: 2019 Four Winds 22B
State: North Carolina
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THOR #16398
Unhappy Fresh Water Tank ???

I recently purchased a 2019 Four Winds 22B. I connected my fresh water hose to the "city water" connection thinking that I would bypass my fresh water tank and just have water at my taps on command. However, when I returned to my RV I discovered water dripping from my onboard water connection and saw that my fresh water holding tank was full. Are the two systems connected somehow? Is there a valve I need to switch to bypass the onboard water tank? Or perhaps the tanks are mislabled? Any input is greatly appreciated from this "Newbie"! Donna
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Old 08-21-2019, 07:24 PM   #2
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There's a one-way valve in there, that is supposed to keep this from happening.
But it sometimes get clogged up, and doesn't close.
Just remove it, and clean it out: you'll be as good as new!

And welcome to the forum!
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Old 08-21-2019, 07:34 PM   #3
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THOR #16398
Red face Thanks!

Thanks for the speedy reply! You say, "there's a valve in there"...where is "in there"? How do I clean it out? Take it apart...how, flush it with the water hose....???? More info if you have please. D
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Old 08-21-2019, 08:12 PM   #4
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State: Arkansas
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Can you see where you water enters into your RV (from the inside.... Mine is under my bed where my fresh water tank is).

I can see the hoses come into the RV. One goes to the water tank (plus you will see a vent tube) and the other connects somewhere AFTER the water pump (But I never traced mine since it works fine). Look in that area.

I dont think you can "flush it out"....I bet you can unscrew it and clean it or replace it.

Let us know what you find.
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2017 Axis / 25.4: Big Foot Levelers, Aims 1200 Watt inverter, Ceramic Window Tint, Full River AGM 6V batteries, Front Hellwig Sway bar / Rear Track Arm, Safe T Plus Steering Stabilizer, PD 4655 converter, Hard Wired Surge Guard, WEboost + WiFi Ranger, LED Headlights/Driving lights, Fresh water surge tank, Black Tank Tornado flush, 4999 zip ties.
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Old 08-21-2019, 09:22 PM   #5
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It's integral to the water pump. Turn off the city water, run water through your pump for several minutes to flush it out. You may also want to check the suction strainer for bits of plastic from the tank and clean it out.
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Old 08-21-2019, 10:26 PM   #6
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I knew that they could get you pointed in the right direction!
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