As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CABIN & AFT CABIN TEMPERATURE SELECTORS EXTREMELY SENSITIVE SLIGHT MOVEMENT, LIKE 1 DEGREE, RESULTS IN 10-15 DEGREE TEMP INLET CHANGE. ALL OTHER AIRPLANES THAT WOULD REQUIRE .1250-.2500 KNOB MOVEMENT. ACFT GROUNDED. INSPECTED FWD, AFT CABIN TEMP SENSORS. CLEANED FILTERS + SENSORS. ACCOMPLISHED TEMP/PACK CONTROLLERS NR 1 & NR 2 BITE. NO FAULTS. OPS TEST NORMAL. NO HISTORY 90 DAYS.