Do you need to reset the AC after a fault? 2011 c class

[Mymercedes220]

I had my AC regassed as the light has started flashed several times in my 2011 c220.

After the regas it still doesn't work. The light flashes still.

Does it need to be reset on a computer does anyone know ?
Many thanks

 

[alexanderfoti]

Yes most of the time the fault code needs to be erased before the AC will work again.