Fan does not blow anything ?

I went to use the heater today but while selecting any fan speed nothing works
the speed selector does switch between 1 to 4 but all i can hear are the vents switching under the dash , but nothing comes out , could this be a faulty switch or perhaps heater core ... ?. not sure what to check first .

any suggestions , thanks , 1993 beretta , 2.2 engine . 160000kms .

If the blower is not running, check the fuse, blower high speed relay, and fusible links.

If the blower is not running, check the fuse, blower high speed relay, and fusible links.

Thanks , I checked all conections and cleaned up the terminals outside on the blower , and it works now . I must have done somthing right.