As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABINE TEMP CONTROLLER NOT WORKING PROPERLY. IN COLDEST SETTING STILL BLOWS OUT HOT AIR. DUCT TEMP HOVERS AROUND 40C REGARDLESS OF KNOB POSITION. ACFT GROUNDED. PERFORMED BITE CHECK ON RT & LT PACK CONTROLLERS IAW PLACARD. NO FAULTS FOUND. NO FAULTS ON RECALL, NO HISTORY LAST 30 DAYS, OPS CHECK NORMAL, OK FOR SERVICE.