The problem is that no air flow comes through the dashboard centre section vents, air blows only on windscreen and foot section. Previously I had no gas in the air conditioning system, now it is filled up. The CCM module was crazy before, blowing hot on the driver side and cold on the passenger side. There was no airflow in the middle section. After filling up the AC, air temperature on both sides is OK, but still no air blows in the middle of the dashboard. The airflow is strong, the blower is working OK. I have changed the termistor in the dashboard, no result. I am getting a CCM LIN-bus error in VIDA. I have tried calibration of CCM module, no success. The calibration starts but does not run, no results. Looking for ideas on how to repair.