What was found
FLIGHT DECK TEMPERATURE SELECTOR DOES NOT CONTROL THE FLIGHT DECK TEMPERATURE WITHIN LIMITS. IT IS UNRESPONSIVE BETWEEN THE 10 O'CLOCK AND 1 O'CLOCK POSITION. THIS RESULTS IN THE CONT CAB DUCT SUPPLY TEMPERATURE TO STABILIZE AT 15 C OR 65 C, BUT NO TEMPERATURE IN BETWEEN. THE TEMPERATURE AT CRUISE IS OUTSIDE OF ACCEPTABLE LIMITS. ACFT GROUNDED. PERFORMED TEMP CONTROL INDICATION AND OPERATIONAL TEST IAW AMM 21-61-00. NO FAULT FOUND. PERFORMED PACK/ZONE TEMP CONTROLLER BITE IAW FIM 21-61, TASK 801. NO FAULT NOTED. OPS CHECKED GOOD.