What was found
COCKPIT ZONE TEMP LIGHT ILLUMINATED WITH RECALL AND EXTINGUISHED WITH MASTER RESET. ACFT GROUNDED. CONFIRMED COCKPIT ZONE TEMP ANNUNCIATOR COMES ON WITH RECALL & EXTINGUISHES WITH RESET. TROUBLESHOT AND FOUND NR 2 PACK ZONE TEMP CONTROLLER WITH COCKPIT TRIM VALVE FAULT. PERFORMED BITE OF NR 1 & NR 2 PACK ZONE TEMP CONTROLLERS IAW AMM 21-61-00, BOTH OPS NORMAL, NR 2 CONTROLLER FAULT LIGHT EXTINGUISHED AND COCKPIT ZONE TEMP ANNUNCIATOR REMAINS EXTINGUISHED WITH RECALL. GROUND VERIFICATION SUCCESSFUL. NO HISTORY LAST 30 DAYS.