Tab 320 S Boondock 2021 water pressure issue when dry camping

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  Grumpy_G Member Posts: 475

  August 2023

  Basics check: Nautilus levers set to "dry camping" and water pump turned on ? Is the pump running continuously and no water ? Or no noise/no water ? 

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  Happy_Camper2 Member Posts: 22

  August 2023

  Dry camping, pump on, no water. I can hear the pump. 

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  Sharon_is_SAM Administrator Posts: 9,557

  August 2023

  You need to prime the pump.  

  Sharon / 2017 T@B CSS / 2015 Toyota Sienna Minivan / Westlake, Ohio
  

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  Happy_Camper2 Member Posts: 22

  August 2023

  I primed the pump before I drove out here. Do you think I need to prime it again?
  
  the other issue I discovered is that I can’t seems to get water out of the fresh water out valve at the back of the camper. 

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  Happy_Camper2 Member Posts: 22

  August 2023

  So we fixed the fresh water drain and drained to 3/4 full in case that was the issue. There appeared to be mud dobber action back there. 

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  Happy_Camper2 Member Posts: 22

  August 2023

  Ok and depressurization was the answer. Not sure if it was altitude or what but that got us flowing again!

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  Happy_Camper2 Member Posts: 22

  August 2023

  Well, we ended up not having water at all during this camping trip.  I was able to repressurize once and get it flowing when in Colorado and then water drained out and we lost pressure.  Oddly enough, we got back to Texas after the trip and I pressurized again and got the dry camping water flowing again.  Does anyone have an explanation for what could be going on when we are in high altitude?

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  Sharon_is_SAM Administrator Posts: 9,557

  August 2023

  Happy_Camper2 said:

  Ok and depressurization was the answer. Not sure if it was altitude or what but that got us flowing again!

  I am wondering if a plugged fresh tank air vent would prevent flow.  Can you locate the vent and make sure it is not occluded.
  

  Sharon / 2017 T@B CSS / 2015 Toyota Sienna Minivan / Westlake, Ohio
  

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  pthomas745 Moderator Posts: 3,732

  August 2023

  @Happy_Camper2 Not sure if there has been any discussion before about "high altitude" pump issues.  There have been hard to diagnose things like small cracks in a pump fitting that might be hard to spot unless you disconnect the fitting, ect/

  The pumps do have an adjustment for the "shutoff" pressure of the pump.  There are also threads about disassembly of the pump and look at "check" valves, etc.

  https://tab-rv.vanillacommunity.com/discussion/5588/pump-problems/p1
  

  
  

  2017 Outback

  Towed by 2014 Touareg TDi
  

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  Happy_Camper2 Member Posts: 22

  August 2023

  Thank you both for your comments! We are back in this 110 degree heat.  My husband is planning to get under the trailer to look for more mud-dobber activity that could plug a vent, @Sharon_is_SAM.  Will let you know what we find.
  
  @pthomas745, thanks for the link!  Will read and try to understand this.

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  Happy_Camper2 Member Posts: 22

  January 13

  By the way, I forgot to close the loop on this.  There were mud dobber nests that my husband cleared out.

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  Sharon_is_SAM Administrator Posts: 9,557

  January 13

  @Happy_Camper2 - do you remember where exactly you found the mud daubers?  This is significant as you had a very odd presentation with water not flowing.

  Sharon / 2017 T@B CSS / 2015 Toyota Sienna Minivan / Westlake, Ohio
  

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  Happy_Camper2 Member Posts: 22

  January 14

  Hi Sharon_is_Sam, my husband got underneath the trailer (not me) and he seems to recall he found a couple of spots in drains pointing down on both the right and left sides of the trailer.  Unfortunately, he doesn't remember anything more specific than that.  He had to use wire to scrape out the mud because it was inside the drains and not just on the surface.

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