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Old 02-17-2016, 07:18 AM   #1
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Join Date: Feb 2016
Posts: 1
Sandpiper 377FLIK

When my black tank is full , my bathroom sink will not drain water, I have the grey lever pulled so I don't understand why this is happening, anyone have any ideas??

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Old 02-17-2016, 10:15 PM   #2
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Join Date: Oct 2015
Posts: 106
On some models the lav in the bath drains to the black not the grey. If you drain the black does the lav drain? if so that answers that. If not you have other issues.
Let us know.

Dale & Karen
2015 Lacrosse 311RLS
2006 F-250 The 06-6.0
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Old 02-22-2016, 04:07 PM   #3
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Join Date: Sep 2011
Posts: 229
Do you have the grey #2 valve open? Mine has 4 levers underneath...galley, black, grey 1 and grey 2. Grey 2 remains in the open position.
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