event coming on when traveling automatically

[Charlie W]

Hi all I have a 3701lk, my living room vent automatically comes on, it opens up and the fan starts blowing, when I'm traveling down the road, none of the other two do that.
Has anybody had that issue if so how do I fix it? I never notice it until I stop and go inside this time I think it's been running for about 15 hours not good on batteries.
Thanks

[Mudchief]

Go to the one that is running and make sure the control for that fan is turned off.

[Charlie W]

Yes they're all off when I leave, when I get to my destination the living room one is open and running. All I can think of is there's a short some place that's turning it on.

[Daryles]

Maybe swap controllers with another one to determine if it's the controller or the fan (control board).

[rohrmann]

Until you figure out why this is happening, pull the fuse that controls that fan so it doesn't run. You don't say who makes that fan, but maybe a call to the manufacturer will shed light on why this is happening.