As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT CAB ZONE TEMP CAUTION ILLUMINATES ON RECALL AND EXTINGUSHES WITH MASTER CAUTION RESET. GROUNDED-YES. TASK CARD COMPLIED WITH PERFORMED PACK TEMP CONTROL VALVE BITE PROCEDURE, REF B737-800 FIM 21-62 TASK 801 ON NR 2 CONTROLLER. FAULT SHOWED FLT DECK TRIM VALVE. REMOVED AND INSTALLED NEW CONTROL CABIN TRIM VALVE, PER B737-800 AMM 21-61-21. OPERATIONS CHECK GOOD, LEAK CHECK NOT DETECTED, TEMP CONTROL VALVE BITE PROCEDURE APPEARS ALL GREEN ON NR 2 CONTROLLER THIS CLEARS MEL 21-21G. PLACARD AND CN REMOVED. SEAMC SCOTT NOTIFIED.