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'That smell'
We're getting it when the roof air is on. What do you all add to the BW tank when it happens?

Re: 'That smell'
Reply #1
Dawn helps and also products with oxiclean  works well also.

Re: 'That smell'
Reply #2
If your coach is closed up. No windows or doors open and you have the kitchen exhaust fan on it will pull fumes up from the black water tank through the toilet. You must have an outside source of make up air when that large fan is running.

Re: 'That smell'
Reply #3
We use Dawn (1/2 cup) and Calgon (1 cup) dissolved in a bucket of hot water, then poured down the drain.  Works for both tanks.

Make sure the toilet, and the sink and shower drain water traps, are kept full of water.

Check your rooftop holding tank...

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  • AC7880
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Re: 'That smell'
Reply #4

  • jor
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Re: 'That smell'
Reply #5
Mike,
  As mentioned above it is likely a failing air admittance valve. Good time to replace all of them. If you do I recommend you buy Studor valves. They are pricey but will not let you down. For now you can just keep positive pressure in the...

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Re: 'That smell'
Reply #6
Yup, the right answer is NOT to try to make the gray or black tank smell good, but to find the source of the odor.

Locate the SOURCE.  If under the sink in kitchen or bathroom, the air admittance valve(s) are the likely source.  This is assuming...

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  • bigdog
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Re: 'That smell'
Reply #7
Yup, the right answer is NOT to try to make the gray or black tank smell good, but to find the source of the odor.

Locate the SOURCE.  If under the sink in kitchen or bathroom, the air admittance...


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Re: 'That smell'
Reply #8
Mike,
  As mentioned above it is likely a failing air admittance valve. Good time to replace all of them. If you do I recommend you buy Studor valves. They are pricey but will not let you down. For now...


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  • jor
  • [*][*][*][*][*]
Re: 'That smell'
Reply #9
Quote
the ones that sell for $5 or $6 at HD or Lowe's work just as well

One would think so but that has not been the case for me. On two rigs I have replaced the valves with the Home Depot off the shelf ones and two (one on each coach) did not do...

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Re: 'That smell'
Reply #10
Qaulity products are always a bit more $ knock off don't care much, and China doesn't care in the very least, China just says try to sue me!

Re: 'That smell'
Reply #11
Brett's idea that the odor might be coming from the air conditioner is probably correct, There is no air intrusion from the roof, the units recirculate the inside air and don't pull outside air. If the problem is only when running the air that...

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Re: 'That smell'
Reply #12
Well yes and no, the roof a/c most likely has an axle shaft that penetrates the suction side of the evaporator supply fan housing thru an unsealed oversized hole downstream of the high static pressure drop filters and evap coil so any odors...

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Re: 'That smell'
Reply #13
I had nasty smells coming from the vent holes in the toilet bowl  I plugged them and life got less smelly.

  • nitehawk
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Re: 'That smell'
Reply #14
The holes in your toilet bowl are overflow holes. I got plugs (free) from the Mfr.
Seems overflow isn't necessary when a user has to hold down (or up) the control to add water.

Re: 'That smell'
Reply #15
We use Dawn (1/2 cup) and Calgon (1 cup) dissolved in a bucket of hot water, then poured down the drain.  Works for both tanks.

Make sure the toilet, and the sink and shower drain water...


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Re: 'That smell'
Reply #16
Well yes and no, the roof a/c most likely has an axle shaft that penetrates the suction side of the evaporator supply fan housing thru an unsealed oversized hole downstream of the high...


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Re: 'That smell'
Reply #17
What Calgon product are you using?
Calgon Ocean Breeze Moisturizing Bath Beads.

Calgon Ocean Breeze Moisturizing Bath Beads with Aloe & Vitamin E, 30 oz -...

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