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01-28-2022, 12:55 PM
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#1
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Member
Join Date: Feb 2019
Posts: 69
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Black tank roof vent leaking black water
We have a 2013 Fleetwood, Bounder, model 35K with a vacu-flush system, two toilets.
When the black tank was full, it would of course display full level reading. It would also, not allow the Vaccu-flush to operate showing a RED light at the indicator boxes in both bathrooms. This would clear once I emptied both tanks.
However, lately, the Vacu-flush works fine. But, the RED light does not show when the tank is full. Also, a small amount of black water came out of the roof vent. Of course, we emptied the black tank and cleaned up with appropriate fluids.
Has anyone had the same problem with their Bounder and the black tank roof vent releasing black tank water? and or also the Vacu-flush system not displaying a RED light indicating the Black Tank is full?
Is there a valve I need to replace? A switch to replace?
Now, the Vacu-flush pump is working fine. It is brand new; replaced about a year ago. There are no leaks at the pump, nor the toilets, nor the inside under the sink vents. No leaks at the black tank release valve to empty both the gray and black. Everything is working perfectly. Except what I described above with black water coming out from the roof vent.
Please, answer if this has occurred to your motorhome Vacu-Flush system. Especifically, the Fleetwood, Bounder series or one with similar system.
I appreciate your time and knowledge.
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01-28-2022, 05:19 PM
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#2
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Member
National RV Owners Club Workhorse Chassis Owner RV Trip Wizard
Join Date: Jan 2022
Posts: 93
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I don't know what the problem is, but wow, black water on the roof. Sounds like it is time for a chemical tank cleaning.
__________________
Bruce & Zoe
2005 SeaBreeze LX 8360 - 2020 Jeep Rubicon
Full Timers
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01-28-2022, 06:31 PM
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#3
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Senior Member
Join Date: Dec 2014
Location: Cen Il.
Posts: 710
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It would seem to me the full sensor has failed. If it was working you wouldn’t be able to flush when full. Usually it’s the other way around, the sensor stops you from flushing when you know there is room in the tank.
Take care
Pointrow
__________________
2014 Fleetwood Providence 42p
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01-29-2022, 07:15 AM
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#4
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Senior Member
Fleetwood Owners Club
Join Date: Dec 2010
Location: Cincinnati, Ohio
Posts: 680
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I agree with Pointrow, check the sensor wiring might have come loose or mice chewed. I believe the sensors are on the outside of the tank. Been awhile since hearing about the black tank content on the roof.
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Alan & Terry 2016 Bounder 34T
Blue Ox Alpha Tow Bar, RVi brake 2system
2015 Jeep Trail Hawk (Toad),WeBoost,Tire Minder TPMS. 1000 watts of Solar
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01-29-2022, 07:54 AM
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#5
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Senior Member
Join Date: Jul 2010
Location: FT on the Road
Posts: 3,728
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I have a '16 and the float for the full tank pump shut off is internal from what I understand. I suppose a piece of TP could be blocking it from floating up and stopping the pump. May want to call REV and see what sort of sensor you have.
I've never filled mine to check if it even works. Hopefully never will either.
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I don't subscribe to threads I reply to so will not see your reply to my comment. Drop me a direct message if you want a reply from me.
Cheers!
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02-15-2022, 04:59 AM
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#6
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Junior Member
Fleetwood Owners Club
Join Date: Feb 2022
Location: Stockbridge, GA
Posts: 16
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So I’m almost scared to look on the roof because in the last couple days when my Vacuflush is priming or pumping I hear this menacing gurgling in the wall between master and half bath which I understand is where the black tank vent runs up. I’m reading 2/3 full but I’ve had some sensor issues with it reading E also. So maybe I’m full and sensors are incorrect. Gonna empty today and hopefully rid myself of this demonic gurgle in the wall. It’s freaky, really. Sounds like ocean waves in the wall and that’s just wrong!
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07-18-2022, 05:52 AM
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#7
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Junior Member
Fleetwood Owners Club
Join Date: Feb 2022
Location: Stockbridge, GA
Posts: 16
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Quote:
Originally Posted by Wootieli
So I’m almost scared to look on the roof because in the last couple days when my Vacuflush is priming or pumping I hear this menacing gurgling in the wall between master and half bath which I understand is where the black tank vent runs up. I’m reading 2/3 full but I’ve had some sensor issues with it reading E also. So maybe I’m full and sensors are incorrect. Gonna empty today and hopefully rid myself of this demonic gurgle in the wall. It’s freaky, really. Sounds like ocean waves in the wall and that’s just wrong!
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OMGOSH! So I believe after that happened, my vent may be clogged. Anyone unblocked a Fleetwood Bounder 35K black tank roof vent? Silly question, may I rephrase? Those of you who have, can you tell me what you did to unclog your roof vent? Mine is a 2016. I think I’m dreading the answer….
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07-18-2022, 11:29 PM
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#8
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Member
Join Date: Feb 2019
Posts: 69
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Black tank vent
Hello, we have continued to use a natural cleaning agent, Tank techsrx RV tank treatment, just science everytime we empty and service our tanks. It has worked. The sensors now show empty.
There has to be a valve of some sort to stop the black water from coming out through the top. Also, the vaccuflush system is very different than most other toilet systems.
I'm still doing research on it. We keep a very close eye on the tank levels. If you find any other info, do not hesitate to share.
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07-19-2022, 02:01 AM
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#9
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Senior Member
Join Date: Jul 2019
Posts: 484
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Your in luck, I found a guy with what looks to be the EXACT same problem!
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07-19-2022, 07:01 AM
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#10
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Senior Member
Join Date: Jul 2010
Location: FT on the Road
Posts: 3,728
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Quote:
Originally Posted by Wootieli
So I’m almost scared to look on the roof because in the last couple days when my Vacuflush is priming or pumping I hear this menacing gurgling in the wall between master and half bath which I understand is where the black tank vent runs up. I’m reading 2/3 full but I’ve had some sensor issues with it reading E also. So maybe I’m full and sensors are incorrect. Gonna empty today and hopefully rid myself of this demonic gurgle in the wall. It’s freaky, really. Sounds like ocean waves in the wall and that’s just wrong!
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No, Gray tank is the vent in the wall between the 1/2 bath and the bedroom. The black tank is the vent in the wall between the 1/2 bath and the living room (behind the TV). Call FW CS and ask for the drain plumbing diagram to see for yourself.
__________________
I don't subscribe to threads I reply to so will not see your reply to my comment. Drop me a direct message if you want a reply from me.
Cheers!
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07-19-2022, 07:05 AM
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#11
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Senior Member
Join Date: Jul 2010
Location: FT on the Road
Posts: 3,728
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Quote:
Originally Posted by PURALIFE
Hello, we have continued to use a natural cleaning agent, Tank techsrx RV tank treatment, just science everytime we empty and service our tanks. It has worked. The sensors now show empty.
There has to be a valve of some sort to stop the black water from coming out through the top. Also, the vaccuflush system is very different than most other toilet systems.
I'm still doing research on it. We keep a very close eye on the tank levels. If you find any other info, do not hesitate to share.
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There is no valve in the vent to the roof. There are a number of reports of people pumping black tank liquid on the roof when their full tank switch does not work or was never hooked up. Always good to have an idea when your tank shows full on the tank gauges. They are a different system than the vacuflush sensor. They show full on mine before by vacuflush sensor shows full and shuts the pump down.
__________________
I don't subscribe to threads I reply to so will not see your reply to my comment. Drop me a direct message if you want a reply from me.
Cheers!
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07-20-2022, 05:41 AM
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#12
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Junior Member
Fleetwood Owners Club
Join Date: Feb 2022
Location: Stockbridge, GA
Posts: 16
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Quote:
Originally Posted by computerguy
There is no valve in the vent to the roof. There are a number of reports of people pumping black tank liquid on the roof when their full tank switch does not work or was never hooked up. Always good to have an idea when your tank shows full on the tank gauges. They are a different system than the vacuflush sensor. They show full on mine before by vacuflush sensor shows full and shuts the pump down.
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Computerguy, that’s exactly right! I’m sure that’s why I heard the ocean in the wall. There is nothing to keep effluent from flowing out the vent on top. There really should be a one way valve. Also, I don’t believe my Vacuflush shut off switch was ever connected. Can you tell me where to look to see? It does not shut off when tank is full. I heard that wall gurgle the other day again before I was showing full. And you are also correct on the position of the vents. I was looking at the plumbing diagram backwards. But I’m telling you, I hear the gurgle between the bedroom and bath wall 🤷🏻*♀️
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07-20-2022, 05:47 AM
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#13
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Junior Member
Fleetwood Owners Club
Join Date: Feb 2022
Location: Stockbridge, GA
Posts: 16
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Quote:
Originally Posted by SavnTheWales
Your in luck, I found a guy with what looks to be the EXACT same problem!
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That’s hysterical!! And I can relate to both the poop geyser AND the burst hose, only when mine burst, it wasn’t just a squirt across my shirt. Full on frontal and facial dude!!! It was sooo bad. I felt like I’d been through a true initiation.
Also, I’m thinking that guy must have had a Bounder!!
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07-20-2022, 09:17 AM
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#14
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Member
Join Date: Feb 2019
Posts: 69
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Your answer has nothing to do with the challenge! If you have nothing of importance to add according to the descriptive, the comments are totally unnecessary.
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