You need to replace your blower motor because it is dragging and drawing too many amps.
You will discover that the blower motor resistor is burned, and so is either the speed switch, and/or various connectors in the harnesses that connect it all to the blower motor.
I suggest you examine it all, from the switches ,to every connector in the harnesses including relay, resistor, motorhead, and interconnecting harness plugs.
I also suggest you obtain all replacement parts from dealer because they have made recent changes to blower to address this problem. Have dealer parts guy order you the lastest revision to all you need replaced.