Heater Blower Problems on my Audi A6 2008 3.0 Diesal S line Lemans Quattro

[zdassu]

Hi i was hoping some one could help, my Heater Blower on my Audi A6 works sometimes and other times it doesnt come on. The other day i was driving bavk from Scotland and for atleast 1 hour during the Journey the Heater would blower would not come on even though i had put the Blower on Max which is 12. I had the same problem today as well, it did not come on but after about 20 minuits it automatically came on. is this a common fault? has anyone experienced a similar priblem? what would be the best way to sort this out?

 

Thankyou you help in this matter would be much appreciated