As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TEMP CONTROL WAS IN AUTO, SELECTED TO CABIN & 72 DEGREES. CABIN WENT VERY HOT QUICKLY & SMELLED LIKE BURNING PLASTIC. DUCT OVERTEMP CABIN AMBER CAS MESSAGE POSTED. RAN THROUGH ABNORMAL CHECKLIST & SAME RESULTS IN MANUAL MODE, COCKPIT & CABIN CONTROL & TURNING OFF BLEED AIR IN BETWEEN. SUPPLY TEMP MAXED AT 310 DEGREES & THEN WENT TO DASHES. E7 & E8 ERROR CODES SHOWED ON TEMP PANEL. EVENT MARKER BUTTON PUSHED. R & R TEMP CONTROLLER ASSEMBLY. OPS CHECKED GOOD IAW AMM 21-22-05.