As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CABIN ZONE TEMP ILLUMINATED ON RECALL. GROUNDED - YES. NR 2 PACK/TEMP CONTROLLER SHOWS "ZONE TRIM VALVE" FAULT ON PREVIOUS FLIGHT. RESET FAULT. FAULT DID NOT RETURN. BITE TEST NR 2 PACK/TEMP CONTROLLER GOOD, REF AMM 21-61-00. FUNCTIONAL CHECK OF PASSENGER FWD CABIN TRIM VALVE GOOD.