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Old 06-10-2020, 11:03 AM   #1
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2002 Newmar Moutain Aire Blower Fan Question

Hi Folks,

I have a 2002 Newmar Moutain Aire MACA3560.
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I am working on trying to eliminate oders in restroom.
I have drained the Black Water and Gray Water tanks several times.
I have dropped a Walex Bio Packs into the toilet.
I have also flushed several buckets of fresh water with dish detergent
and we are heading to the store to get Calgon and Dawn dish detergent to try that.

I have thoughly washed and sanitized the bathroom floor and walls and bowl.

I have also made sure all the P Traps have water in them.

My question is by the City Water hookup, there is a switch marked blower. Is this a fan that removes air and vapors from the black or gray tanks. What is this Blower, I can find no mention of it in my Newmar documentation.

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Thanks so much in advance. Mark

to Blower Fan
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Old 06-10-2020, 11:14 AM   #2
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The blower ,is a furnace air booster fan to help heat the water bay in cold temps.
Look up behind the water bay panel ,you’ll see a 3” open duct pointing toward the back side , there is always air flow from the furnace , but with the booster fan running, while the furnace is, there’s more air flow.
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Old 06-10-2020, 11:19 AM   #3
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Quote:
Originally Posted by Skip426 View Post
The blower ,is a furnace air booster fan to help heat the water bay in cold temps.
Look up behind the water bay panel ,you’ll see a 3” open duct pointing toward the back side , there is always air flow from the furnace , but with the booster fan running, while the furnace is, there’s more air flow.
Thanks so much.
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Old 06-10-2020, 11:20 AM   #4
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2002 Newmar Moutain Aire Blower Fan Question

As far as the odor problems.
1. Any thing to hide or rid the actual odor in the tanks is short term.
2. Check under cabinets for AAV valves. These are notorious for failing and allowing odors in.
3. If you have a blank tank rinse look for vacuum breaker valve sometimes under bathroom vanities. These also can fail and allow odors.
4. Roof vents need to be clear and properly sealed at roof line. Also adding some of the new cyclone or other type vents can help.
5. Make sure a vent is sealed properly at the tanks.
6. Traps loosing water can also contribute to the problem.

Sometimes multiple issues above contribute. If all are in working order you will not get smells inside coach.

In my case I replaced all the AAV valves and added cyclone vents to roof. We used to get odors while driving if tanks were full. Now we are good and odor free.
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