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Old 08-23-2016, 04:31 PM   #1
Rsc373
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Black Tank Flush mislabeled

Just spent our second weekend in our 2016 3911FB. Knock on wood not finding any real issues yet. This is our third camper, but first time 5ver. I have figured out that the black tank flushes are labeled backwards. 3911fb has a half bath, 2 black and 2 grey tanks. When I hook up and flush tank 1, tank 2 fills up. When I flush tank 2, tank 1 fills up. Also, when I unscrew the hose from tank #2 flush port water pours out. Guessing the anti siphon valve is faulty. We have a seasonal site and don't have a truck to take back to dealer. Dealer will be coming to install vent covers (they "forgot" to install prior to delivery). I will have them fix the anti siphon valve then. So the question is is the fixing the the flush ports an easy fix? Just flipping hoses?
 
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Old 08-23-2016, 05:09 PM   #2
Mr Pachu
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The easiest flush port fix that I can think of, is just change the labels.
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Old 08-23-2016, 06:03 PM   #3
Carl n Susan
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The anti-siphon valve is working. That is the source of water at the connector when you disconnect the hose. The anti-siphon valve is located high up inside the trailer (typically behind the shower or in the bathroom sink cabinet (the OWC may have found a new hiding place in the 2016 and 2017 models)). There is about 10' of 1/2" pex, full of water than needs to be drained when you stop flushing.



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