What was found
BURNING ODOR IN CABIN. GOT VERY HOT & CHKD TEMP CONTROLLER, TEMP FLASHING 300 & E5. ATTEMPTED TO ADJUST CONTROLLER TO REDUCE TEMP, NO SUCCESS. PILOT SIDE OF CONTROLLER SEEMS TO BE WORKING NORMALLY. POWERED ACFT & BEEN ABLE TO DUPLICATE DISCREPANCY. PERFORMED ECS BURN OUT PROCEDURE & NOTED TEMP ON CABIN DUCT STAY STUCK BTWN 120-180 DEGREES, NEVER WENT DOWN AS COCKPIT ONE WHICH DUCT TEMP DROPS AT 40 DEGREES WHEN SELECTED FULL COLD. ACCESSED CABIN & COCKPIT TEMP CONTROL VALVES ON AFT MX BAY & NOTED COCKPIT VALVE POSITION IND MOVING WHEN SELECTED COLD OR WARM TO CLOSE OR OPEN, CABIN TEMP CONTROL VALVE ISN'T MOVING WHEN COMMANDED TO COLD. ACCOMPLISHED T/S STEP IAW AMM 21-61-00, STEP E, & FOUND ALL WIRE CHKS OK, INSPECTED VALVE VT014. TURNED EVERYTHING DOWN, REMOVED CABIN TEMP CONTROL VALVE VT014 IAW AMM 21-22-05 & FOUND BUTTERFLY STUCK IN OPEN POSITION, CAUSING OVRHT ON DUCT DUE ALL BLEED AIR PASSING & BURN ODOR IN CABIN, UNDER DISCREPANCY 3.1 SWAPPED WITH COCKPIT TEMP CONTROL VALVE IAW AMM 21-22-05, POWERED BACK ON & GOT E5 CODE FLASHING ON COCKPIT SIDE WHICH CONFIRM VALVE INTERNALLY DAMAGED & STUCK, ABLE TO COOL CABIN USING VALVE FROM COCKPIT, SWAPPED BACK TO ORIG CONFIG. R & R CABIN TEMP CONTROL VALVE IAW AMM 21-22-05, OPS & LEAK CHKD OK, WORKED IAW AMM 21-22-05. OK FOR SERVICE.