Had to jump start the car the other day, forgot to turn off the heater.... now it instantly blows the fuse, i have disconnected the blower motor and still the same. I did the same with blower speed dial. Any ideas?

 

"the fuse"
There are lots of fuses.

 

For openers, I'll ask, since the HVAC is only supposed to be powered when the key is on, why would leaving the HVAC controls on matter at all since it looses power when the key is off

And, there are a couple of connectors involving the HVAC that have the tendency to melt, bad enough sometimes that the connections short to each other. This can, of course, blow fuses.

Disclaimer, any and all questions or answers from me are predicated on a car with STOCK wiring, if there's been any electrical sodomy whatsoever, I can't see that from here so it ain't accounted for in my posts......

 

The only fuse i know of for it under drivers side steering column.

 

The key was on as i started it....

 

where are these connectors, im sure something melted togather