As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE CABIN TEMP WENT TO 40C. AT FL250 WOULD NOT COOL BE LOW 35C PERFORMED PACK TEMPERATURE CONTROL - BITE PROCEDURE REF FIM 21-62 TASK 801 ON BOTH CONTROLLERS 1 & 2. OPS CHECKS PASSED, NO FAULTS FOUND ON BOTH CONTROLLERS 1 & 2.