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03-21-2018, 10:15 AM
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#1
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Member
Join Date: Apr 2012
Location: Regina, Sask., Canada
Posts: 39
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Fan-tastic vents not working
Got down to Texas 2 wks ago to scout out some destinations for next winter. First park we stayed at both of our Fan-tastic vents would not work. Pulled all fuses and reseated, 13.6 volts on all fuses, also had 13 volts at pos and grd terminals on circuit boards of fans. Ordered a replacement fan assembly, could not just get circuit board! We moved to a another park before replacement came and both fans worked!
We have now moved to a third park and the fans are not working again! I’m not sure what the problem is anymore.... is it a park power issue or is it an internal trailer power issue?
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Dianne & Dave
2013 Columbus 320
2014 Ram 3500 HD srw
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03-21-2018, 10:23 AM
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#2
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Senior Member
Join Date: Nov 2017
Location: MN
Posts: 1,322
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Not sure what model you have so I'll throw out some things i noticed in my manual. Fans are fairly sensitive to vent cover being open far enough; i.e. they won't run if cover is only cracked open. I believe some of the models have a thermostat, and some of them have a rain sensor that closes the vent and shuts off.
Good luck.
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Mitch in MN
2018 Patriot (Grey Wolf) 23MK travel trailer
2011 Durango 5.7L and OEM tow package
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03-21-2018, 10:37 AM
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#3
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Senior Member
Join Date: Jul 2010
Location: Waynesville
Posts: 14,428
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Check and tighten the "Ground Wire" that is up there !  Youroo!! 
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03-21-2018, 10:41 AM
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#4
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Member
Join Date: Apr 2012
Location: Regina, Sask., Canada
Posts: 39
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Thanks Mitch, vents fail to open when trying to activate with remotes. Sensors are dry and batteries in remotes have been replaced.
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Dianne & Dave
2013 Columbus 320
2014 Ram 3500 HD srw
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03-21-2018, 10:44 AM
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#5
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Senior Member
Join Date: Jun 2013
Posts: 10,833
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They run on 12 volts so unlikely park power issue. Do your lights work? Furnace Fan? Maybe flaky convertor or battery.
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03-21-2018, 10:45 AM
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#6
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Member
Join Date: Apr 2012
Location: Regina, Sask., Canada
Posts: 39
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Thanks Youroo..will see if both fans are tied back to a common ground.
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Dianne & Dave
2013 Columbus 320
2014 Ram 3500 HD srw
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03-21-2018, 10:47 AM
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#7
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Member
Join Date: Apr 2012
Location: Regina, Sask., Canada
Posts: 39
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Yup... everything working although I haven’t tried the furnace.
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Dianne & Dave
2013 Columbus 320
2014 Ram 3500 HD srw
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03-21-2018, 10:56 AM
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#8
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Senior Member
Join Date: Jul 2010
Location: Waynesville
Posts: 14,428
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Quote:
Originally Posted by patchman
Thanks Youroo..will see if both fans are tied back to a common ground.
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Each fan will have a short ground wire with a ring wire terminal that is Normally grounded under the Nut that holds the Push switch that works when LID is opened for fan use! Youroo!!
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03-21-2018, 11:24 AM
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#9
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Land of the Midnightsun
Join Date: Mar 2016
Location: Midland TX
Posts: 346
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Adjust your thermostat on your fan
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John & Janice
2016 Coachmen Concord 300DS
2010 Jeep JK 2.5 inch lift 33' tires
Elite Ready Brutte tow bar & Blue Ox base plate
Never mistake Knowledge for Wisdom. One helps you make a living the other help you make a LIFE. 
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03-21-2018, 12:35 PM
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#10
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Member
Join Date: Apr 2015
Location: Arlington, Texas
Posts: 72
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Fantastic vent fans
Timing is everything.... Just this morning my bathroom fan stopped working. Voltmeter in hand I went to work. Everything checked out inside. Up on the roof and wiggled the white wire to the push switch. Dry and would not move. Started to take the motor out then tried the white wire to the push switch again. Bingo!
The fitting on the end of the wire was loose under the switch it just barely. Tightened up the nut holding the fitting in place and works fine now.
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03-21-2018, 12:52 PM
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#11
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Junior Member
Join Date: Mar 2013
Location: Gabriola Is. BC
Posts: 12
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We've had similar problems from time to time. In our case it turned out to be corrosion on the plunger switch for the vent cover. Not sure if this would apply in your case.
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03-21-2018, 02:58 PM
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#12
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Senior Member
Join Date: Jul 2010
Location: Waynesville
Posts: 14,428
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Quote:
Originally Posted by Jetjockey6
Timing is everything.... Just this morning my bathroom fan stopped working. Voltmeter in hand I went to work. Everything checked out inside. Up on the roof and wiggled the white wire to the push switch. Dry and would not move. Started to take the motor out then tried the white wire to the push switch again. Bingo!
The fitting on the end of the wire was loose under the switch it just barely. Tightened up the nut holding the fitting in place and works fine now.
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Bingo! That's what I was talking about! Youroo!!
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03-21-2018, 08:08 PM
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#13
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Senior Member
Join Date: Dec 2015
Location: Yakima, WA
Posts: 131
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I have found that many 12v light and other equipment failures, especially intermittent ones, often can be traced back to a bad ground. Nice to find them as its usually a pretty quick and easy fix.
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2016 Cardinal 3450 RL
2012 Silverado 2500 HD Crew Cab
6.6 L Duramax and Allison Transmission
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03-21-2018, 10:01 PM
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#14
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Member
Join Date: Apr 2012
Location: Regina, Sask., Canada
Posts: 39
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Yes, I think the problem has to be a common grd connection between the two fans. Will have to try pinpointing the trouble when I get back home. Thanks to all for the suggestions.
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Dianne & Dave
2013 Columbus 320
2014 Ram 3500 HD srw
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03-22-2018, 08:59 AM
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#15
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Senior Member
Join Date: Sep 2016
Location: Colorado
Posts: 1,311
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I think the key point with your problem is the fact that Both of your fans were not working. Tells me your first search would be to common wiring shared by both fans as in grounds, hots, fuses, etc. One other minor little detail is the dampness sensor. If it was really humid, may be causing the units to stay shut. Doubt it, but maybe.
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2003 Duramax
2017 Crusader 315
2016 Boston Whaler Montauk 150
Former Montana owner
Colorado Cruiser, Over the Pass and Down the Hill
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03-22-2018, 01:15 PM
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#16
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Senior Member
Join Date: May 2013
Location: Tucson, AZ
Posts: 168
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Quote:
Originally Posted by Jetjockey6
Tightened up the nut holding the fitting in place and works fine now.
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With my problems, I usually find that it's the nut behind the wheel that needs adjusting. 
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2013 Coachmen Mirada 35DL
Chuck and Susan, RIP Toby and Gracie, the greatest dogs.
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03-31-2018, 05:50 PM
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#17
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Member
Join Date: Apr 2012
Location: Regina, Sask., Canada
Posts: 39
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Well, subsequently to the last failure, we stayed in four more rv resorts/parks and both fans worked properly in each facility. I do not feel that the fan failures were the result of an internal fault in the trailer so unless there are further failures i will let sleeping dogs lie! No use in pulling the trailer apart to find something that isn’t there!
Thanks to everyone who offered advice!
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Dianne & Dave
2013 Columbus 320
2014 Ram 3500 HD srw
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