I believe the contactor K22 initially engaged for few seconds(star connection) then release after engaging of K23(delta connection). Failure of K22 also Chance to create the spark on K23 as well as K22.Now need to replace of all three contactor's.The model numbers are given below.This failure of contactor due to ageing or gap between contact point or improper voltage to the contactor coil.The contactor coil voltage is 220V specified in the contactor but we don't have the schematic for the new controller installed.Need to check with the installer whether they give coil voltage as 220V or 24V to the contactor.