What was found
FWD CABIN ZONE TEMP ILLUMINATES WITH MASTER CAUTION RECALL. EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REVERSED CONFIGURATION CHANGES OF MEL 21-1G OF THE RT PACK REF AMM 21-00-00-040-804. PERFORMED PZTC BITE ON BOTH CONTROLLERS, MULTIPLE TIMES WITH NO DEFECTS NOTED REF AMM 21-61-00-700-806-002. PERFORMED CABIN TEMPERATURE CONTROL AND INDICATION OPERATIONAL TEST WITH LT, RT, AND BOTH PACKS OPERATING WITH NO DEFECTS NOTED REF AMM 21-61-00-700-807-002. CLEARS MEL 21-1G AND 21-19I. RT PACK AIRFLOW SHUTOFF VALVE RETURNED TO NORMAL CONFIGURATION REF AMM 21-00-00-440-801. FWD CARGO HEAT DUCT OPENED REF AMM 21-00-00-040-804. ETOPS GROUND VERIFICATION SUCCESSFUL.