CL420 heating system problem

[h17n dj]

Hello there all... first of all i hope i have posted this in the correct section, if not then my apologies... a friend of mine has an "R" plate CL420 (W140 i think!?) and as the title suggests he has problem witgh his heating system. all of the lights come on and the temperatures, settings and fan controls can be adjusted but it doesnt blow out any air what so ever even when the car is warmed up. hot or cold doesnt make any difference either! anybody have any ideas what this could be?

Hope you can help.... thanks in advance

 

[ontmiss]

Blower Motor fuse.

 

[h17n dj]

we checked the fuses under the bonnet and they all seemed ok... sorry forgot to mention that!

 

[ontmiss]

Could be blower motor regulator.

 

[h17n dj]

cheers mate will get him to check that out