As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN TEMP CONTROLLER REQUIRED ABNORMALLY HIGH SETTING TO MAINTAIN A COMFORTABLE TEMPS. ALL THREE CONTROL KNOBS IN 2 O'CLOCK POSITION. ACFT GROUNDED. COULD NOT DUPLICATE. ACCOMPLISHED TEMP CONTROL, OPS TEST & BITE CHECKS IAW MM 21-61-00, OPS CHECKED NORMAL & BITE "GO". PRECAUTIONARY CLEANED ALL THREE CABIN TEMP SENSOR FILTERS IAW MM 21-61-06, CHECKED NORMAL. NO HISTORY 30 DAYS.