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08-31-2015, 12:16 PM
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#1
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Member
Join Date: Jan 2013
Posts: 61
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Gray Water back up
Anyone else have the sinks backup in the bathroom and the kitchen before the shower backs up?
Usually in other coaches when the gray water gets full the shower backs up. Mine has the sinks backing up. Strange to me
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08-31-2015, 12:48 PM
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#2
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Senior Member
Join Date: Jan 2015
Posts: 520
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Our 2015 30DS behaves the same. Never understood, nor put much thought into why the shower doesn't show signs of a full grey tank before the sinks.
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08-31-2015, 02:02 PM
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#3
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Senior Member
Join Date: Jan 2014
Posts: 317
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Gray Water back up
Yes, I had that happen on a sunseeker. The problem was a bad air admittance valve under the bathroom sink. I still am not quite sure I understand exactly why.......but I replaced the valve when grey tank stink was coming in and it also solved the water backup issue.
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09-02-2015, 09:59 AM
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#4
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Senior Member
Join Date: Apr 2015
Location: Thousand Oaks, CA
Posts: 156
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We had that happen shortly after buying our 30DS, and is was caused by construction debris in the "p-trap" under the sink.
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09-02-2015, 12:41 PM
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#5
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Senior Member
Join Date: May 2013
Location: Florida
Posts: 312
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Our shower backs up when the bathroom grey tank is full. We've never filled the kitchen grey tank full, but I would expect it to back up in the sink as there is no other exit/entrance to the grey tank. Except the roof vent and that is higher than the sink drain.
__________________
2013 Flagstaff 8528IKWS, 2006 F-350 6.0L
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09-02-2015, 12:50 PM
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#6
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Senior Member
Join Date: Apr 2015
Location: Thousand Oaks, CA
Posts: 156
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Quote:
Originally Posted by DickiedooFlagman
Our shower backs up when the bathroom grey tank is full. We've never filled the kitchen grey tank full...
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There is only one grey water tank, shared by both sinks & the shower. When it's full, it will normally back-up into the shower, because that's the lowest point.
If people have water backing-up into the sinks, but not the shower, it's due to something other than the tank being full.
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09-02-2015, 12:54 PM
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#7
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Senior Member
Join Date: May 2013
Location: Florida
Posts: 312
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Quote:
Originally Posted by vacationlovers
There is only one grey water tank, shared by both sinks & the shower. When it's full, it will normally back-up into the shower, because that's the lowest point.
If people have water backing-up into the sinks, but not the shower, it's due to something other than the tank being full.
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Our trailer has two grey tanks, and two 3" drain connections. One 3" connection also services the black tank.
__________________
2013 Flagstaff 8528IKWS, 2006 F-350 6.0L
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09-02-2015, 01:06 PM
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#8
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Senior Member
Join Date: Apr 2015
Location: Thousand Oaks, CA
Posts: 156
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Quote:
Originally Posted by DickiedooFlagman
Our trailer has two grey tanks...
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Sorry, my mistake. Since this is an FR3 forum, I assumed you had an FR3.
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09-02-2015, 01:12 PM
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#9
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Senior Member
Join Date: May 2013
Location: Florida
Posts: 312
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Quote:
Originally Posted by vacationlovers
Sorry, my mistake. Since this is an FR3 forum, I assumed you had an FR3.
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Well my fault too - assumed just a Forest River Forum. I will look closer next time.
__________________
2013 Flagstaff 8528IKWS, 2006 F-350 6.0L
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09-02-2015, 01:12 PM
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#10
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Junior Member
Join Date: Mar 2013
Location: Cleburne, Texas
Posts: 25
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Gray water back-up
We have the same problem- gray water will back up into the bathroom sink when we shower.
In Goshen we had the Air Admittance Valve replaced because of odors under the sink cabinet. Prior to that when the gray water backed up it would be into the shower. Now it backs up into the sink. Of course it didn't do it until we were two days away from Goshen. Would love to know what causes it.
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09-02-2015, 07:17 PM
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#11
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Member
Join Date: Jan 2013
Posts: 61
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At about 2/3 tank full with the shower on the bathroom sink with blow out and actually wet the ceiling
I have replaced the Air Admittance Valve. No change. I have removed the p traps to check for debris. Have got on the roof and ran water down through the roof vent and it comes right out the gray tank. I don't know what else to do
Sent from my iPhone using Forest River Forums
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09-02-2015, 07:19 PM
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#12
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Member
Join Date: Jan 2013
Posts: 61
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Ps. I guess it's "grey" water instead of "gray" water. My bad
Sent from my iPhone using Forest River Forums
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