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 MASTER CAUTION RESET. GROUNDED - YES. REF FIM 21-61-00. BITE SHOWS NR 2 CONTROLLER, FLT DECK TRIM VALVE. REF AMM 21-61-06, CLEANED FLT DECK TEMP SENSOR AND FILTER. REMOVED AND REPLACED FLT DECK TRIM VALVE REF AMM 21-61-21-400-801. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST REF AMM 21-51-00-700-803, NO DEFECTS NOTED. PERFORMED TRIM VALVE LEAK CHECK, NO LEAKS NOTED.