What was found
CONTROLLER CABIN ZONE TEMP ON RECALL. ACFT GROUNDED. PERFORMED NR 2 PACK TEMP ZONE BITE AND FOUND TRIM AIR MOD VALVE FAULT ON FLIGHT HISTORY BUT COULD NOT DUPLICATE FAULT IN VERIFY MODE OF BITE, NUMEROUS ATTEMPTS. FOUND CONTROL CABIN TEMP SENSOR AND FILTER DIRTY. CLEANED CONTROL CABIN TEMP SENSOR AND FILTER REF AMM 21-61-06. RESET FAULTS ON PACK ZONE TEMP CONTROL BITE. CONTROL CABIN PRIMARY TEMP CONTROL. OPS CHECKS GOOD MULTIPLE TIMES REF AMM 21-61-00. BITE CHECKS WITH NO FAULTS REF FIM 21-62, TASK 801. GROUND VERIFICATION SUCCESSFUL.