TC informed intermittent APS fault. Train performance was not affected. However, TC informed TIMS wa s showing intermittent inverter current at value '0' on rearM2 car. ~~~~~ 2526 TC informed intermittent APS fault. Train performance was not affected. However, TC informed TIMS was showing intermittent inverter current at value '0' on rear M2(2526) car. CE checked & found 2526 APS fault unable to reset, Keep recurring.  2526 found having APS fault. Found 2526 A/c 1-1 & A/c 2-1 compressor motor shorted to GND. Removed/insulated wires U/V/W on both faulty A/c units. Function test & no APS fault occurred. Notif 2406157 raised for #2526 A/c 1-1. Notif 2406161 raised for #2526 A/c 2-1.  Lee KH 44780 Notif 2406157  Name                          : Lee K H  Date of Occurrence            : 7/8/2022  Last Service Date             :    EMU / Equipment / Location    : 2526 / A/C 1-1  Equipment Serial No. (if any) :    Description of fault / cause  : Compressor motor shorted to                                      ground/causing APS fault.(Wire                                   U, V, W removed & taped)  Measurements (if any)         :    Required Rectification        : Required Servicing Notif 2406161  Name                          : Lee K H  Date of Occurrence            : 7/8/2022  Last Service Date             :    EMU / Equipment / Location    : 2526 / 2526 A/C 2-1     Equipment Serial No. (if any) :    Description of fault / cause  : Compressor motor shorted to                                      ground causing APS fault (Wire                                   U,V,W removed & taped)  Measurements (if any)         :    Required Rectification        : Required Servicing