TC reported TIMS showed APS fault intermittently. ~~~~~ 3677 TC reported TIMS showed APS fault intermittently.  3677 showed APS fault. Found #2678 registered  APS fault multiple times. Checked/found #2678 A/c 1-2 compressor shorted to GND. Isolated #2678 A/c 1-2 U/V/W cables. checked all HV equipments for any abnormalities - All OK. Notif 2248329 raised to RSW for CCU C/o.  Kana 44240