As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRIP NR 1161433 CREW REPORTED BURNING ODOR FROM CABIN TEMPERATURE RUNAWAY. CREW REGAINED CONTROL OF CABIN TEMP AND RETURNED TO FIELD. MAINTENANCE TROUBLESHOT THE SYSTEM BUT WAS UNABLE TO DUPLICATE THE DISCREPANCY. THE FAILURE HAS NOT REPEATED.