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Old 10-17-2018, 10:36 PM   #1
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Brand new Sierra 378fb

Help! My brand new Sierra 378fb. The shower will not drain. Am I missing something?
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Old 10-18-2018, 12:01 AM   #2
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Dumb question but is the gray water tank full?
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Old 10-18-2018, 01:04 AM   #3
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Shouldn’t be just hooked up last night.
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Old 10-18-2018, 08:24 AM   #4
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Check to see if you have a Hep valve ( I think that's what it's called) under the drain, sometimes the rubber gets sucked up the wrong way. Ours did plus was full of sawdust, installed new one and no problem for the past 2 years.
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Old 10-18-2018, 11:09 AM   #5
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https://hepvo.com/

Make sure to drain the tub before disconnecting the plumbing fittings tho.

There are installation instructions at the link above.
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2016 RAM 3500 DRW 4x4 LB LoneStar Edition
2018 Chaparral 360IBL w/Andersen Ultimate 2, Tireminder SMART TPMS, Swift Hitch SH04 WiFi Backup/Rear View Camera, Progressive EMS-HW50C
Prior Rig: 2006 RAM 3500 DRW LoneStar Edition
2011 Starcraft 392BHU w/Andersen No-Sway hitch
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Old 10-19-2018, 12:47 AM   #6
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It was inverted but temporarily fixed it! Thank you!
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Old 10-19-2018, 11:12 PM   #7
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Thanks for following up so as to help the next person with the issue.

Good call dblr!
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2016 RAM 3500 DRW 4x4 LB LoneStar Edition
2018 Chaparral 360IBL w/Andersen Ultimate 2, Tireminder SMART TPMS, Swift Hitch SH04 WiFi Backup/Rear View Camera, Progressive EMS-HW50C
Prior Rig: 2006 RAM 3500 DRW LoneStar Edition
2011 Starcraft 392BHU w/Andersen No-Sway hitch
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