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 > MaxxFan 7500K

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jamesu

Camano Island, WA

Senior Member

Joined: 03/20/2004

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Good Sam RV Club Member


Posted: 05/01/22 02:52pm Link  |  Quote  |  Print  |  Notify Moderator

When I bought our brand new Outdoors RV 24RLS three years ago, I remember wondering why we would need automated remote control roof vents + fans, but I figured it’s a cool feature that won’t cause problems. Boy was I wrong.

Just returned home from our first 2022 “shakedown” trip this past week. All is shipshape, EXCEPT for the MaxxAir 7500K roof vents + roof fans. The remotes all have new batteries, and none of the remotes work. I am not able to raise the vents…nothing works. During our five nights out we listened to each vent “chirp” at us every few minutes throughout each day and night, and every so often green lights in the ceiling assembly would light up brightly and then go out.

I have re-read my manual, researched online, and now I am writing this missive, hopefully to get good advice here. My next step will likely be to contact the RV Dealer where we purchased it for possible (expensive?) service. Right now I believe I would just like to have these space age roof vents removed and replaced with the good old fashioned, uncomplicated manual vents and fans that always worked for us in the past.


2011 Chevy 2500 Duramax diesel
2019 Timber Ridge 24RLS (Outdoors RV)
Go Cougs!

CharlesinGA

South of Atlanta, Georgia

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Joined: 01/12/2016

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Posted: 05/03/22 07:20pm Link  |  Quote  |  Print  |  Notify Moderator

MaxxAir fans have proven sensitive to voltage. If you have solar, or lithium batteries, the voltage will go well above 13.5v and if high enough the circuit boards will cook. The newest generation of the MaxxAir fans has a modified circuit board that allows higher (slightly) voltages.

The folks on the Escape trailer forum have been down this rabbit hole repeatedly and finally determined that using a small buck boost transformer (about the size of a cigarette pack) is probably the best way of assuring proper voltage to the fan. Here are a FEW of the threads on this subject.

Charles

https://www.escapeforum.org/forums/f38/b........g-from-14-volt-solar-charging-22344.html

https://www.escapeforum.org/forums/f9/maxxfan-known-problem-21959.html

https://www.escapeforum.org/forums/f9/maxxfan-issues-20950.html

https://www.escapeforum.org/forums/f8/maxxfan-7000k-voltage-regulator-14667.html


'03 Ram 2500 CTD, 5.9HO six speed std cab long bed Leer top and 2008 Bigfoot 25B21RB.. previously (both gone) 2008 Thor/Dutchman Freedom Spirit 180 & 2007 Winnebago View 23H Motorhome.

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