As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE ENROUTE, THE CREW WAS REPORTING A CABIN DUCT OVERHEAT AND TURNED THE SYSTEM OFF. WITH THE SYS OFF THE CREW WAS UNABLE TO MAINTAIN AN ADEQUATE TEMPERATURE IN THE CABIN OR FLIGHT DECK. THE CREW ELECTED TO DIVERT WHEN THE CABIN TEMP WAS APPROXIMATELY 10 DEGREES C. R & R TRIM AIR VALVE, 11HK & DUCT TEMP SENSOR 15HK IAW AMM 21-63-51 AND 21-63-15, OPS CHECK SATISFACTORY PN 1320A0000-01.