TC reported Front DT (car3660) saloon car floor is wet due to a/c water condensation. ~~~~~ CE: 3660 found #2 end TOP ceiling panel heavy condensation. Flooring wet. Clean flooring. Temp.22.6 c. Panel just wipe. OE TOH: To check 3660 evap for wetting and filter.  3660 A/c 2 MCU faulty & replaced - Done. Function test - OK. A/c filter replaced with the thicker type. Purging - Done. A/c temp. set to 25'C.  Monitor for 2 hrs - OK. 3660 MCU: S/N : OLD : 841776. NEW : 841987.  Nelson. 03/05/2020.