What was found
RIGHT PACK LIGHT ILLUMINATES DURING RECALL, THEN EXTINGUISHES ON MASTER CAUTION RESET. PRESSURIZATION AND AIR CONDITIONING APPEAR NORMAL. ACFT GROUNDED. PERFORMED BITE TEST OF TEMPERATURE CONTROLLER, REF AMM 21-61-00, FOUND TEMPS CONTROL VALVE FAULTED ON NR 2 TEMP CONTROLLER, CLEARED AND REPEATED BITE TEST, NO FAULTS NOTED. GROUND VERIFICATION SUCCESSFUL. NO FURTHER DEFECTS NOTED.