As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT. CAB, ZONE TEMP LIGHT ILLUMINATED, EXTINGUISHES ON RECALL. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST REF AMM21-61-00. NR 2 CONTROLLER SHOWS FLT DECK TRIM VALVE FAULT. R & R SERVICEABLE CONTROL CABIN TRIM VALVE. OPS AND LEAK CHECKED OK. OPS NORMAL, REF AMM21-61-21-400-801, 21-61-21-000-801.