The EC light of the AC in a 2001 Mercedes Benz S430 stays on. AC does not kick in?

Question by bahirfanous posted 5 months 1 week ago in 2000-2006 (W220)

The AC in a Mercedes S430, 2001 was working very good last summer.  The battery was disconnected for several month because the car was not used, 

has a EC switch that does not want to turn off.  As such, the AC is running on economy and does not cool.  My contact information:

I appreciated any int.