As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MASTER CAUTION RECALL CONT CAB ZONE TEMP LIGHT ILLUMINATES. LIGHT GOES OUT WITH MASTER CAUTION RESET. CONT CAB TEMPERATURE IS CONTROLLABLE. NR 2 TEMP CTRLR SHOWS FLT DECK TRIM VALVE FAULT ON BIT & PREV FLT TESTS. VERIFIED FLT DECK TRIM VALVE FAULT ON NR 2 PACK/ZONE TEMP CONTROLLER. REPLACED V143 CONTROL CABIN TRIM AIR MOD VALVE REF MM 21 61 21. ZONE TRIM AIR MODULATING VALVE CHECK AND LEAK CHECK NML REF MM 21 61 21.