As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATES ON RECALL, WILL RESET. ACFT GROUNDED. CONFIRMED FAULT, BITE TEST ON NR 2 CABIN ZONE TEMP CONTROLLER SHOW STANDBY PACK, CONTROLLER FAULT (M14443) AND FLT DECK TRIM VALVE FAULT. GVI ON FLIGHT DECK TCV (V143) SHOW NO DEFECT (LOOKS NEW). R & R NR 2 CABIN ZONE TEMP CONTROLLER REF AMM TASK 21-61-20, PACK/ZONE TEMP CONTROLLER BITE. OPS CK NORMAL REF AMM TASK 21-61-00-700-806-002.