W124 heater blower problem

[myarmar]

The blower in my 500E doesn't work after the car was parked outside during snow and frozen rain last night. I think maybe snow and ice blocking blower cage? I could see snow inside through the mesh on both sides of the of the wiper. The same problem happened last year after snow storm, but then it disappeared and I did not do anything.
Did anybody notice this with W124? Is it even possible for the snow to get into the blower compartment?
Thanks, Mike