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. RESET ON CAUTION RESET. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONTROL BITE MULTIPLE TIMES, INITIAL FAULT SHOWN FLT DECK TRIM VALVE , TEMP CONTROLLER NR 2 . RESET FAULT, FAULT DID NOT RETURN. RAN RT PACK HOT/COLD MULTIPLE TIMES, NO DEFECTS NOTED. BITE SHOWS NO FAULTS. CLEANED FLT DECK TEMP SENSOR FILTER IAW AMM 21-61-06. NO HISTORY NOTED 60 DAYS.