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03-13-2019, 04:15 PM
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#1
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Junior Member
Brand: Thor Motor Coach
State: Idaho
Posts: 22
THOR #11367
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Vent Fan... where is fuse?
Good morning, we're on the road with our doggie in Arizona. Like using this main van fan(over kitchen/living area) to move air, but its not working. We're in a 2018 Thor Windsport 34p. Any ideas? Can't find the fuse for this. Already tested all the fuses under the bed. Thanks!
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03-13-2019, 06:15 PM
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#2
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Senior Member
Brand: Thor Motor Coach
Model: FourWinds SK 35
State: Virginia
Posts: 251
THOR #4706
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Seems to me it would be a 12 volt fuse in the panel maybe with lights
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03-13-2019, 06:27 PM
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#3
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,329
THOR #7035
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May be the sensor that shuts it down if the vent is not open.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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03-13-2019, 06:35 PM
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#4
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Member
Brand: Thor Motor Coach
Model: ACE 32.1
State: Michigan
Posts: 85
THOR #11442
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My fan, different model RV, is fused at the 12V panel. I have a Left/Driver side fuse and a Right/Passenger side fuse. The fan is tied into the Right/Passenger side fuse. Since you said you checked your fuses at the panel I would drop the inner cover and see if a connection on the switch came off. You can check for 12V to verify power to the switch if needed to prove fan has given up the ghost.
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03-13-2019, 06:50 PM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: Chateau 24F
State: Arizona
Posts: 250
THOR #2878
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Some models have a rocker switch mounted above the sink area to control this fan.
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03-13-2019, 07:52 PM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Serrano
State: Florida
Posts: 211
THOR #8144
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There is a good possibility that the fuse is up in the vent cavity next to the fan. You will have to remove the facia around the vent and then you can see the wires. They quite often go from the hot wire on the fan to a fuse and then they are connected by wire nuts to the power lines that go down the middle of the coach in the ceiling area.....just for ventilator power.
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03-15-2019, 02:18 PM
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#7
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Junior Member
Brand: Thor Motor Coach
Model: Hurricane 35 M
State: Virginia
Posts: 1
THOR #14702
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Similar Problem with Fan
I'm having a similar problem but mine is intermittent. I have the exact same fan, sometimes it doesn't work, sometimes it does. Usually when it is out I'll check the fuses with a fuse check device (not by pulling them out). They all check out good. After that the fan will usually work. I've noticed when the fan is out, the outside LED lights will not work with the switch (the inline fuse under the sink is good) but will still work with the remote control. The 12v lights above the bed in the slide also do not work. When the fan is working every thing else works. The problem is intermittent so I'm not sure what is happening.
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05-20-2021, 05:42 PM
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#8
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Junior Member
Brand: Thor Motor Coach
State: New York
Posts: 2
THOR #23101
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Realize this is an old thread but can't seem to find any additional info.
I cannot seem to get the living room max air fan to turn on in my 2018 hurricane 34J. I checked for a safety switch on the roof under the vent cap and did see one.
If I am reading the schematic correctly it appears to be on the same fuse as the living room lights.
Checked all fuses in the DC block and they are good.
Anyone have any ideas.
Thanks
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05-20-2021, 07:24 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,884
THOR #6826
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Can’t offer any specifics as I don’t have your model. But the first thing I’d do is pull off the trim and see if you’ve got 12V at the switch. That’ll tell you if the problem is at the fan or upstream somewhere. My coach (SOB) has both a wall switch and a switch on the fan itself. Both have to be on for the fan to work. I don’t suppose you’ve got anything that simple going on?
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05-20-2021, 09:45 PM
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#10
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,326
THOR #6903
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Check the voltage at the fan and if it is hot, give it a push keeping your fingers out of the way
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05-21-2021, 11:48 AM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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We have one like the picture in post #1.
The circuit board failed. It was an easy fix but I can't find or remember where I got the replacement
Google your model #.
Let us know what you find
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09-08-2021, 11:58 PM
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#12
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Junior Member
Brand: Still Looking
State: Colorado
Posts: 3
THOR #1122
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I am having similar issue. Its odd because I have the same fan as pictured in front and back vents on my 2015 Thor Axis. On Sat. they both were working and then when tried to turn on Sunday aftn. neither of them worked. I checked all my fuses seem okay, all other lights etc. seem to work fine. I went up and checked back vent and was able to pull out the wire and disconnect the clip. I connected a tester and it did not register any power. Seems something came disconnected or shorted somewhere preventing power from getting to these vent fans. The tiny little fan in my bathroom vent still works, its a different type fan though.
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09-09-2021, 02:17 AM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: Citation
State: Texas
Posts: 920
THOR #8139
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What mh do you have
Our 2014 Citation (class C) has 3 fuse locations, 1 under the hood, 1 on the bed pedestal and "some" individual fuses located by the house battery.
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05-14-2022, 01:46 AM
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#14
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Junior Member
Brand: Thor Motor Coach
Model: A.C.E.
State: Florida
Posts: 9
THOR #26822
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I have the same fan with the same problem. 2019 Thor A.C.E. 30.2. Just bought it and as we were going through it, I noticed the vent fan didn’t work. Every other fan (bathroom and kitchen) and lights work. Turned every switch I could find on. Still nothing. Thinking it must be a fuse, but where is it? Any ideas would be greatly appreciated.
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05-14-2022, 02:39 AM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: A.C.E. 27.2
State: Indiana
Posts: 1,875
THOR #14698
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Our 2018 ACE the fan switch puked out. Was intermittent then just quit. I verified the switch was bad by checking switch had power to it. I used a 12 volt test light. You could also check with a multimeter. I was 99% certain it was the switch but to be sure i jumperd 12 volts directly to the fan motor to verify the motor ran. The switch is a little printed circuit board with a cpl pushbutton switches. I think it ran around $30 on E Trailer
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2018 ACE 27.2
Toad 2019 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain Towbar
Roadmaster Invisibrake
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