As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL, THE CONTROL CABIN ZONE TEMP ILLUMINATED, EXTINGUISHED ON RESET. ACFT GROUNDED. REMOVED & REPLACED THE ZONE TRIM MODULATION VALVE IAW AMM 21-61-21-000/400. CHECKED GOOD IAW AMM 21-51-00-700-803, PACK ZONE TEMP CONTROLLER BITE TEST. OPS NORMAL.