Troubleshooting MaxxAir Fan Buttons Not Working

Products Featured in This Question

Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Reversible Fan

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MaxxFan Plus Roof Vent w/ 12V Fan, Thermostat, and Remote - Powered Lift - 10 Speed - Smoke

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MaxxFan Deluxe Roof Vent w/ 12V Fan, Thermostat, and Remote - Powered Lift - 10 Speed - Smoke

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Question:

Approximately 3 years ago I bought a replacement circuit board for my Maxx Air fan In and out and it worked great until about a year ago. It will not come on using switch controls on fan but will work fine with the remote! I was wondering if you might can suggest things to check. Greatly appreciate any ideas. Thank you! P.S. I am not electrically knowledgeable but am willing to try checking things before replacing entire unit. Fan is in a 2017 Casita Spirit, unsure of version.

asked by: L. A

Expert Reply:

Since the remote works we know the board isn't totally shot. I'm guessing it is the wiring for the control switch. All you can really do is check that wiring to make sure it is secure and no corrosion is present at both ends. If you decide to go ahead and replace the fan we have the # MA00-04500K or # MA00-07500K which both come with a remote and will fit your existing opening.

expert reply by: Robin H

MaxxFan Deluxe Roof Vent
(click to enlarge)

L. A.

4/23/2025

Thank you so much! I will have the wiring checked before replacing unit! Hopefully this will fix it and I won"t have to order the replacement. TY

Robin H.

4/23/2025

@LA happy to help! Let me know what you find.

L.a.

5/21/2025

@RobinH Hi Robin! So Sorry I haven't gotten back to you before now. It been a busy month! We did check the wiring as you suggested but it still doesn't work except with remote. I was wonder if it's possible to buy the green the control pad alone or perhaps a fuse conneted to it? Thank you for your reply....LA