As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3313 - PILOT REPORTED, THE FREON AIR CONDITIONER FAN EMANATED A BURNING ODOR. COOL AIR CAME OUT, BUT THE FAN SEEMED TO BE BROKEN. MAINTENANCE DEFERRED THE FREON AIR CONDITIONING SYSTEM. UPON INVESTIGATION MAINTENANCE REPLACED BOTH EVAPORATOR MODULE BLOWER ASSEMBLIES, NO FURTHER PROBLEMS.