As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD & AFT CABIN TEMPS CAN NOT BE EASILY CONTROLLED WITH CABIN TEMP CONTROL SYSTEM. SMALL TEMP CORRECTIONS CAUSE LARGE TEMPERATURE SWINGS HOT TO COLD, OR COLD TO HOT. REMOVED AND REPLACED AFT CABIN TEMP BULB IAW AMM 21-62-25. TEMP SELECTORS ON ALL THREE CABIN LOCATIONS OPS NORMAL IAW 21-62-25 AND 21-00-00.