Blower flattens battery

I’m stranded and annoyed with this electrical quirk.

So if I leave this blower on and don’t turn it back to ZERO every time I leave the van it flattens my battery and the van won’t start.

So the problem is the blower SHOULD turn off when I take the keys out right?? Whether it’s on ZERO or 1,2,3 and 4….

I’m stranded and annoyed with this electrical quirk.

So if I leave this blower on and don’t turn it back to ZERO every time I leave the van it flattens my battery and the van won’t start.

So the problem is the blower SHOULD turn off when I take the keys out right?? Whether it’s on ZERO or 1,2,3 and 4….