As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE FORWARD CABIN TEMPERATURE SWITCH CONTROL SENSITIVE AND DIFFICULT TO MAINTAIN SELECTED TEMPERATURE. ACFT GROUNDED. CLEANED THE AIR FILTERS IAW AMM 21-61-06. PERFORMED OPS CHECK IAW FIM 21-61, TASK 864. GROUND VERIFICATION SUCCESSFUL.