As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL, EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED. REMOVED AND REPLACED A CLOGGED FILTER AND CLEANED TEMP SENSOR. ACCOMPLISHED PACK TEMP CONTROL BITE IAW FIM 21-62 TASK 801, FAULTED FLT DECK TRIM VALVE ON ZONE TEMP CONT #2 (M1443). CLEARED FAULT AND "ZONE TEMP" LIGHT DID NOT ILLUMINATE ON RECALL.