MaxxAir Fan - Stuck "On"

[adrienbaker]

Hey all,

I keep my trailer plugged in at home and usually leave the MaxxAir fans on during the summer to try and keep the trailer a little cooler inside.

We packed up to leave on Friday and one of the fans wouldn't turn off. I ended up taking it apart while it was running and just unplugged it (looking back it would have been much safer to pull a fuse or use the 12v disconnect but I was in a hurry and ready to leave, not using my best judgement).

Is there a reset for the the circuit board or is it just fried?

Thanks,

Adrien

[U.S.ArmyVeteran]

With 12 VDC you were not in too much danger

My first thought is it is a bad switch. I never took ours apart, yet.

But if there is a circuit board present its a tad more complicated. Disconnecting it from power may have "reset" it. Put it back together and you may get lucky.

"lectric" is a mystery

[ScottBrownstein]

Bad speed switch. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[adrienbaker]

Wanted to update this thread in case somebody experiences this problem in the future.

I took the fan back apart and plugged it back in but I realized that was just the power from the circuit board to the motor.

I pulled the 12v fuse powering the fans and plugged it back in and it started working like normal again.

Adrien

[TitanMike]

Originally Posted by adrienbaker

Wanted to update this thread in case somebody experiences this problem in the future.

I took the fan back apart and plugged it back in but I realized that was just the power from the circuit board to the motor.

I pulled the 12v fuse powering the fans and plugged it back in and it started working like normal again.

Adrien

Just about anything today controlled by a "circuit board" responds to the "when in doubt REBOOT method".

Sometimes solid state devices get confused and lock into a particular mode which is not what YOU want. Power down, restart, and the circuit resets.

A note, just turning off and back on immediately may not work. Better to totally disconnect power (like removing fuse), let all components that might be storing power bleed down, then restart.