Unplug the unit and remove one wire from it and check it with a meter, should be 0 ohms.

Jiggery pokery method is:
Unplug the unit.
Remove both wires from the fuse and short them together.
Tape them so they cannot short to anything else.
Plug it in and give it a try,
If blown replace it ASAP as it is a critical safety device.
Prevents lint fires which can turn into house fires.

Be sure to clean the blower wheel and clean/check your vent system as this is the most common causes of it blowing.