AC heater blower on MercedesBenz 300CE suddenly stop working?

you could have anything from a fuse to a blower motor problem ,,the blower moter is under the wiper assembly ,,, remove the assembly by removeing the 10 mill bolts ,,, and the plastic cover on the blowermotor houseing is held on with clips ,,, also check the blower resistor module which is in the blower housing