MaxxAir Fan won’t turn off. How?

[DonnaDuane]

hello gang. Thank you all again for your valuable support as I learn to RV in the Winter. Here’s the latest issue. Since it snowed a week ago, the MaxxAir fan has dropped condensation into Ollie. Furthermore, it stopped working all together. I’m pretty sure water got into the control unit. When I walked in this afternoon after skiing, the fan is running, even though I didn’t turn it on, AND I can’t get it to turn off.

 

Do any of you know what I need to do?  There’s no fuse for it.

 

Thank you,

 

Duane

[SeaDawg]

Don't know about yours, but our fantastic fan has a humidity sensor.  We have to switch to manual mode if it's raining or snowing...

[ScubaRx]

Check your temperature setting on the fan.

[DonnaDuane]

I’m unable to check or change anything. The touchpad on the unit doesn’t respond nor does the remote. I just took the screws out to reveal wiring and circuit board. Tried like hell to pull wiring connectors apart but failed. So fan is still running. Thankfully hatch is closed, fan is moving slowly and moving air up. Circuit board showed signs of water exposure so I’m pretty sure it’s cooked. Any other ways to cut power to it without killing power to essential other things?

[DonnaDuane]

I have a model 7000 with rain sensor. But I think when I heated this place up , condensation formed inside the fan lid and dripped down onto floor and I believe into circuit board of fan.

 

I also got dripping water from around the Zamp Solar Charge Controller. Does that thing generate heat that would result in condensation forming around it?

[ScubaRx]

... Any other ways to cut power to it without killing power to essential other things?

 

At some point in time Oliver started putting a separate 12vdc fuse/breaker panel in the upper rear cabinet.  Check that to see if there's a fan circuit.  If so, it will kill power to both the Maxxfan and the bathroom fan.

[DonnaDuane]

Hallelujah! Steve I cannot repay you enough for all you’ve done for me. Simply pulled the fuse and it was off.

 

Thank you

[DonnaDuane]

Oh and you also reminded me I have a ventilation fan in the shower I haven’t been using ‘cause I never looked up to notice it. Thank you one more time LOL

[ScubaRx]

Aww shucks, twern’t nothin’.

 

That’s why we’re here and not trolling Facebook.

[Overland]

Had the same thing happen to us last spring during a three week trip.  Got back to the trailer after a little rain and realized the fan wouldn’t turn off.  We just let it run until we got home.  Fortunately for us the remote (which we had left at home) still worked.

 

I asked Jason to send me a replacement board and it was a cinch to replace.