As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ILLUMINATION OF CONTROL CABIN ZONE TEMP LIGHT ON MASTER CAUTION RECALL. LIGHT EXTINGUISHED WHEN MASTER CAUTION SYSTEM IS RESET. ACFT GROUNDED. PERFORMED THE PACK/ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-51-00-700-803. ONE INTERMITTENT FAULT FOUND FOR THE FLT DECK TRIM VALVE. CLEARED THE FAULT AND RETESTED. NO DEFECTS RETURNED AND NO MAINTENANCE HISTORY FOUND ON THIS SYSTEM WITHIN THE PAST 30 DAYS.