As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL, CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED. EXTINGUISHED & RESET ON MASTER CAUTION RESET PUSH. ACFT GROUNDED. PERFORMED PACK TEMP CONTROL BITE ON BOTH CONTROLLERS, NR 2 CONTROLLER FAULTED "FLIGHT DECK TRIM VALVE". CLEARED FAULT IAW FIM 21-62 TASK 801.