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03-26-2017, 03:35 PM
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#1
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Senior Member
Join Date: Jan 2014
Posts: 4,643
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Fantastic vent fan not working? Here's a tip
Just got back from a great trip to Florida Caverns State Park and Topsail State park. Everything was great. The weather, the bugs, the parks, the people. The Discovery was overall good, with a couple of small items. Most annoying was the vent fan in the bathroom was not working. The power lid worked find, but the fan would not run. Replaced the fuse, took the screen off and made sure the fan motor was not binding. Assumed the worst and figured maybe the motor had burned out somehow. When I got home today, after cleaning and emptying, I took a closer look. I had my volt meter and screw driver and was getting ready to start disassembling the fan assembly. Then for some reason I thought, maybe it would be worth taking a look from the top side. So I went on the roof and looked at the wires which appeared fine. Then I looked at the little plunger for the switch that turns the fan off when the lid is closed. It looked a bit low, so I pressed it with my finger and then it popped back up and the fan started working normally. Some rust or other crud was binding the plunger and that's all it was. I didnt want to spray WD 40 there, so I used some the the teflon type spray I use on my slide mechanism. The plunger seemed fine. Just for good luck, i went over to the kitchen vent fan (which had been working fine) and gave that plunger a squirt and worked it up and down a few times.
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2023 Winnebago Travato
2023 Airstream Flying Cloud BH 30'
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03-27-2017, 08:35 AM
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#2
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Senior Member
Join Date: Jan 2012
Location: MA RI
Posts: 167
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Thanks for the tip. Glad you enjoyed the BUGS!
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Mike and Rose
Dachshunds Hansel and Gretel
Jayco Class C Greyhawk 31SS
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03-30-2017, 07:49 PM
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#3
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Senior Member
Forest River Owners Club Ford Super Duty Owner
Join Date: Dec 2014
Posts: 1,024
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Thanks for the tip.
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03-30-2017, 08:04 PM
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#4
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Senior Member
Tiffin Owners Club
Join Date: Jul 2014
Posts: 2,387
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My Fantastic Fan stopped working a few months ago... Had been fine. I checked everything like you did but did not think about checking topside. I'll do that tomorrow.
Thanks
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Larry and Prissy Sharp
2006 Allegro Bay 37DB
2012 Toyota Yaris
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03-30-2017, 08:30 PM
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#5
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Community Moderator
Newmar Owners Club
Join Date: Feb 2011
Location: Point Pleasant Beach, NJ
Posts: 31,302
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Thanks for that tip.
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Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS
No amount of money can buy you an extra second of time.
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03-31-2017, 05:19 AM
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#6
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Senior Member
Winnebago Owners Club
Join Date: Aug 2013
Posts: 1,636
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Been there done that.
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2012 Journey 40U (Our Incredible Journey)
2008 Dodge Dakota(TOAD) 2005 Honda Shadow in TOAD
AF-1 braking system
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04-02-2017, 09:40 AM
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#7
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Senior Member
Winnebago Owners Club
Join Date: Apr 2012
Location: Fort Myers Florida
Posts: 208
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Same thing I discovered...replaced rusty switch
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Bart Anderson
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04-02-2017, 12:20 PM
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#8
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Senior Member
Tiffin Owners Club
Join Date: Jul 2014
Posts: 2,387
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I tried this and unfortunately it didn't work. My fan is dead. Those things cost about $180 to replace...
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Larry and Prissy Sharp
2006 Allegro Bay 37DB
2012 Toyota Yaris
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04-03-2017, 07:14 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Sep 2013
Posts: 2,476
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Atwood Tech Support would have told you to check the plunger switch first as it is a very common problem.
I just replaced several squeeky fan motors, not very expensive:
https://www.dyersonline.com/advanced...esult/?q=90638
Keep in mind that the vent lid has a lifetime warranty.
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2014 Newell 2020P 45'8" ISX 600 HP
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04-04-2017, 09:58 AM
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#10
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Senior Member
Join Date: Nov 2011
Posts: 146
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My fantastic vent function is operating very well with one exception. The automatic rain closure feature is not functioning. Has anyone have any suggestions as to what I should be looking for and testing?
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G & K Marshall
2004 DSDP 3810-2010 Ford Edge
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04-04-2017, 10:13 AM
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#11
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Senior Member
Join Date: Oct 2013
Posts: 809
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gmarsha2 ...............Like the plunger, you may get away with just a little maintenance (cleaning). Good Luck
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04-04-2017, 05:54 PM
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#12
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Senior Member
Join Date: Sep 2016
Location: Sarasota, FL
Posts: 5,228
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Quote:
Originally Posted by gmarsha2
My fantastic vent function is operating very well with one exception. The automatic rain closure feature is not functioning. Has anyone have any suggestions as to what I should be looking for and testing?
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There is really not a lot to them, at least mine looked very simple. When I called Dometic (parent company) they mentioned that my rain sensor may be bad. I am not sure whether it is bad or not - I haven't had it open in rain yet. Should be easy to test - drip a drop of water on the board and see if the lid starts to close.
I think if you go up and look at it (good time to lube that plunger switch) and see if there is anything obviously wrong, like it's dirty or a wire is cut - otherwise it (two wires) plugs into a board in the vent. Maybe it came loose?
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Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
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04-04-2017, 10:41 PM
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#13
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,652
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Quote:
Originally Posted by gmarsha2
My fantastic vent function is operating very well with one exception. The automatic rain closure feature is not functioning. Has anyone have any suggestions as to what I should be looking for and testing?
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For replacement parts check out rvvent.com
They even have an exploded view of an early model Fan-Tastic fan on the website, but it's hard to find and I can't remember how I did it now.
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2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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