As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT CREW WERE UNABLE TO CONTROL THE CABIN TEMPERATURE, ACM OVERTEMP WARNING RECEIVED AND AT 1 POINT THEY THOUGHT THEY COULD SMELL SOME FUMES, WITH FURTHER MANIPULATION OF CONTROLS CREW WAS ABLE TO GAIN SOME CONTROL OF TEMPERATURE. ECU TEMP SWITCH WAS OUT OF LIMITS.