As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROLLER CAB ZONE TEMP LIGHT ILLUMINATES DURING RECALL. PERFORMED QRH 2.15 ZONE TEMP CHECKLIST. ACFT GROUNDED. PERFORMED PACK ZONE TEMP CONTROLLER BITE ON BOTH 1 & 2 CONTROLLERS IAW FIM 21-62, TASK 801. CONTROLLER 2 SHOWS FLT DECK TRIM VALVE FAULT. REPLACED PRIMARY FLIGHT DECK TRIM VALVE IAW AMM 21-61-21.