As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START, PACK NR 1 ANN ILLUMINATES AND CLEARS WITH MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED FIM 21-62 TASK 801. FOUND NR 1 PACK TCV FAULT. LEFT TVC (V139) NEED TO BE REPLACED AMM 21-51-10/401. REPLACED TEMPERATURE CONTROL VALVE LEFT REF AMM 21-51-10. BITE TEST AND LEAK CK GOOD.