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08-13-2022, 03:43 PM
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#1
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Montana Fan
Join Date: May 2017
Location: Apple Valley
Posts: 134
M.O.C. #19913
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Front Fan on a 3820 FK
Hi my front fan on my 3820 FK blows in versus blowing air out the rig. Is that normal and if not can you change the polarity of the blower motor? You can't change the fan it's just running the wrong direction. Blowing in hot air is not ideal.
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08-13-2022, 05:04 PM
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#2
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,680
M.O.C. #24086
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It looks like the fan blade is held onto the shaft by a set screw.
Any chance they assembled it upside down?
Can you could turn the blade over?
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08-13-2022, 05:36 PM
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#3
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,359
M.O.C. #4831
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Or if they connected the wires backwards, wouldn't the fan run backwards? Is it as simple as disconnecting the wires and switching the connections?
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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08-13-2022, 05:53 PM
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#4
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,658
M.O.C. #9969
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What brand fan?? I have MaxxAir fans and two of the three have provisions on the control to reverse the direction. During the day when Hot I run them blowing the hot air out, in the evening when/if it cools down I reverse them to draw in the cool air.
__________________
Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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08-13-2022, 08:24 PM
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#5
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Montana Fan
Join Date: May 2017
Location: Apple Valley
Posts: 134
M.O.C. #19913
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I did that I turned it upside down and it still pushed air in the fan needs to rotate the oposite way and I am not sure if I can safely change the positive and negative to get it to turn the other way. Thanks
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08-14-2022, 09:57 AM
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#6
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,204
M.O.C. #30417
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If its a 12 volt motor reversing the polarity should reverse the direction.
__________________
Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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08-14-2022, 10:44 AM
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#7
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Montana Fan
Join Date: May 2017
Location: Apple Valley
Posts: 134
M.O.C. #19913
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Fan Motor
Thanks!
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08-28-2022, 01:08 PM
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#8
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Montana Fan
Join Date: May 2017
Location: Apple Valley
Posts: 134
M.O.C. #19913
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HI I tried that and it blows the same way inward. Called Maxxfan and they said you can reverse the wires on the fan so it rotates the oposite direction. However, they said Montana did this for a reason and I should talk to them. So I am trying to find out how other's fans work blows in or out?
Thanks
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08-28-2022, 05:36 PM
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#9
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Montana Master
Join Date: Jun 2020
Location: Qualicum Beach
Posts: 665
M.O.C. #26399
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Quote:
Originally Posted by jstadler
HI I tried that and it blows the same way inward. Called Maxxfan and they said you can reverse the wires on the fan so it rotates the oposite direction. However, they said Montana did this for a reason and I should talk to them. So I am trying to find out how other's fans work blows in or out?
Thanks
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For my fan I use the remote control to change the in/out but if you can't find the remote, there are controls on the fan, you just need a ladder to reach them.
__________________
2018 Keystone Montana 3811MS
2017 Ford F450 diesel dually
600AH Battle Born Lithium Batteries, 1,080 watts solar
3,000 watt hybrid inverter with 120A charger
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08-28-2022, 06:49 PM
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#10
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Montana Fan
Join Date: Mar 2019
Location: Heber City
Posts: 117
M.O.C. #23676
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Fan Direction
Quote:
Originally Posted by jstadler
HI I tried that and it blows the same way inward. Called Maxxfan and they said you can reverse the wires on the fan so it rotates the oposite direction. However, they said Montana did this for a reason and I should talk to them. So I am trying to find out how other's fans work blows in or out?
Thanks
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I have the same trailer and mine blows out. The control does not have a setting to change the direction. If you are not the original owner, this model had an issue where the fan would fault the fridge when you turn it on because there was too much draw on the circuit. There is another thread that describes this and how to fix it. (I haven't fixed mine yet, I just don't turn on that fan).
__________________
Craig and Mary
2017 Montana 3820FK
2020 GMC 3500HD
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Linear Mode
