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08-29-2020, 11:01 AM
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#1
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Established Member
Join Date: Aug 2020
Location: Chattaroy
Posts: 10
M.O.C. #26933
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MaxxFan Troubleshooting
Hello,
I've got a Maxx Fan in the front living area that is not functioning correctly. When I hit the vent open button, the vent tries to rotate but in the closed direction. If I manually open the vent and then hit the fan on, the fan does not turn on and the vent closes. We have the exact same model fan in the bathroom so I have a pretty clear idea of how it is supposed to work.
What typically goes wrong with these units? and where should I begin with my troubleshoot?
Thanks in advance - Dave
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08-29-2020, 12:24 PM
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#2
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Montana Fan
Join Date: Apr 2019
Location: Columbia
Posts: 303
M.O.C. #23739
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Did you check the rain sensor to see if it’s wet or has something on it?
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08-29-2020, 12:25 PM
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#3
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Montana Master
Join Date: Dec 2010
Location: Sioux Falls
Posts: 664
M.O.C. #10985
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Max Air fan
I had the exact same problem you described. I discovered mice had chewed the wiring. The insulation on the Chinese wiring is vegetable based instead of petroleum based. Mice think it is food. Good luck.
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08-29-2020, 12:42 PM
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#4
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Established Member
Join Date: Aug 2020
Location: Chattaroy
Posts: 10
M.O.C. #26933
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I did not but I will check that out! Dumb question - but I assume that it is located on the roof and since I have vent covers, will they need to be removed to access the rain sensor?
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08-29-2020, 12:43 PM
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#5
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Established Member
Join Date: Aug 2020
Location: Chattaroy
Posts: 10
M.O.C. #26933
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On the chewed up wiring, where abouts did you end up finding the problem?
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08-29-2020, 01:11 PM
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#6
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Montana Master
Join Date: Feb 2020
Location: SoCal
Posts: 625
M.O.C. #25842
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Ours in our "C" went berserk. Ended up being the circuit board. Everything is done from inside.
__________________
2018 F350 6.7 DRW pulling a 2020 3121rl
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08-29-2020, 05:21 PM
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#7
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New Member
Join Date: Feb 2018
Location: Nashua
Posts: 6
M.O.C. #21196
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Same problem disconnected both ac/dc wait a few min. turn power back on. It works again
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08-29-2020, 05:52 PM
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#8
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Established Member
Join Date: Aug 2020
Location: Chattaroy
Posts: 10
M.O.C. #26933
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Got it fixed.....it was the rain sensor accessed from the roof. Cleaned the electrodes with some soapy water and dried them off with a paper towel and all is good!
Thanks for the suggestions - Dave 
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07-09-2021, 12:51 PM
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#9
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Established Member
Join Date: Mar 2021
Location: Smiths Station
Posts: 11
M.O.C. #28440
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Did you have to remove anything to gain access to the rain sensor? Was the sensor visible? I’m having the same issue right now.
Thanks
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07-09-2021, 03:37 PM
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#10
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Established Member
Join Date: Aug 2020
Location: Chattaroy
Posts: 10
M.O.C. #26933
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We have the Maxxair vent covers, so those had to be opened/ or removed. Then manually crank the vent open. You will see the electrodes inside. Good luck and hopefully it fixes your issue also.
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07-14-2021, 01:28 PM
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#11
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Established Member
Join Date: Mar 2021
Location: Smiths Station
Posts: 11
M.O.C. #28440
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Unfortunately it wasn't the rain sensor, or the wall switch. Any other ideas? I'm think I'm going to do what the video says and hope for the best. Thanks for your help.
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07-15-2021, 04:21 AM
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#12
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Montana Master
Join Date: Dec 2010
Location: Sioux Falls
Posts: 664
M.O.C. #10985
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Quote:
Originally Posted by Dave In Chattaroy
On the chewed up wiring, where abouts did you end up finding the problem?
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Ceiling above the Light switch panel and in wall close to circuit breakers.
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07-15-2021, 06:56 AM
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#13
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Established Member
Join Date: Mar 2021
Location: Smiths Station
Posts: 11
M.O.C. #28440
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So did you have to do a lot of demolition to fix it?
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07-16-2021, 12:06 PM
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#14
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Montana Master
Join Date: Jan 2016
Location: STAYTON
Posts: 1,118
M.O.C. #18157
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Quote:
Originally Posted by Dave In Chattaroy
Hello,
I've got a Maxx Fan in the front living area that is not functioning correctly. When I hit the vent open button, the vent tries to rotate but in the closed direction. If I manually open the vent and then hit the fan on, the fan does not turn on and the vent closes. We have the exact same model fan in the bathroom so I have a pretty clear idea of how it is supposed to work.
What typically goes wrong with these units? and where should I begin with my troubleshoot?
Thanks in advance - Dave
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Take the interior trim off so you can access the wires. Unplug the fan for a few minutes. Plug it in and try it.
Mark
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07-16-2021, 03:00 PM
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#15
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,669
M.O.C. #9969
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Don't worry, if you open and close the fan a few times the Opening Operator Mechanism will Explode and be non-functional anyway.
We have three MaxxAir Vent Fans and the Operator Mechanism has been replaced on all numerous times. I have to call and get more spares sent since I'm out of spares now. It seems it's cheaper for them to send me replacements that it is for them to fix the problem
__________________
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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07-17-2021, 05:14 PM
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#16
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Montana Master
Join Date: Dec 2010
Location: Sioux Falls
Posts: 664
M.O.C. #10985
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Quote:
Originally Posted by Bpcfd581
So did you have to do a lot of demolition to fix it?
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NO BASICLY JUST HAD TO REMOVE ONE CEILING PANEL and then replace it. was able to hook on to old wires and pull new through.
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07-18-2021, 06:27 AM
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#17
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Montana Master
Join Date: Jul 2014
Location: Upstate NY
Posts: 1,789
M.O.C. #14547
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Quote:
Originally Posted by mhs4771
Don't worry, if you open and close the fan a few times the Opening Operator Mechanism will Explode and be non-functional anyway.
We have three MaxxAir Vent Fans and the Operator Mechanism has been replaced on all numerous times. I have to call and get more spares sent since I'm out of spares now. It seems it's cheaper for them to send me replacements that it is for them to fix the problem
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Gasp! You mean you don't like that pot metal gear and case assembly? Which reminds me ------need to find one
__________________
Dave W
2014 Montana High Country 343RL (Sold!)
2011 Ford 6.7 Lariat CCLB (Went to PU Heaven)
2019 F150SC XLT SE Sport,w/full tow package
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07-11-2022, 08:58 PM
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#18
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Established Member
Join Date: Apr 2019
Location: Bakersfield
Posts: 21
M.O.C. #23754
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Voltage testing
How do you test for voltage on a Maxx fan?
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07-12-2022, 07:41 AM
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#19
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Established Member
Join Date: Feb 2018
Location: johnstown
Posts: 46
M.O.C. #21280
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do you have a link to order the mechanism? Thanks in advance for your help!
__________________
Denny & Cookie-Pennsylvania
2018 Montana 305RL-2019-3500 Duramax-air bags
Sailun tires,2000 watt inverter, Trailer Saver Hitch
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