As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED DUE TO EXCESSIVE BLEED NOISE AND TEMPERATURES FOLLOWED BY CAB DUCT OVHT AMBER CAS. SORTLY AFTER SMOKE APPEARED IN THE CABIN. AIRCRAFT LANDED WITHOUT INCIDENT. R&R CABIN TEMP CONTROL VALVE. OPS AND LEAK CHECKS C/W. NO DEFECTS NOTED. MVF SUCCESSFUL.