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Old 11-01-2017, 05:43 PM   #21
CORattler
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Join Date: Jun 2010
Location: Colorado Springs
Posts: 3,335
M.O.C. #10496
Quote:
Originally Posted by beeje View Post
I just looked up the floor plan for a 3730fl. The bath is towards the rear. Is there a dump valve that you are missing ? (not pulling) towards the rear around the wheels somewhere. I am guessing the tank is full.
It does look like that is the case. If the water rises in the shower as you put water down the sink drain that means water is backing up INTO the shower without you adding water to the shower. Again, look for an additional grey water dump valve on or near the frame in back of the rear wheel on either side.
Keep us advised with your fix. We'll help you through this.
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