As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD CABIN A/C CONTROL IN AUTO SEEMS TO "HUNT" BETWEEN 10 DEG C 50 DEG C. VERIFIED FWD CABIN TEMP NOT FOLLOWING TRUE CABIN TEMP. CHANGED FWD CABIN TEMP SENSOR FILTER AND FWD CABIN TEMP INDICATION NORMAL PER MM 21 61 31 (FILTER CHANGED PER MM 21 61 06). FWD CABIN TEMP SENSOR FAN TESTS NORMAL PER MM 21 61 11.