As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR CONDITIONING - SMOKING OR SPARKING. DR-3L LAV 135 CABIN TEMP IS MUCH COLDER THAN SELECTED ON CABIN CONTROL PANEL LIKE 6 DEG. FOUND THE FWD LEFT LAV LIGHT INOP, THE LIGHT GOES ON & OFF INTERMITTENTLY. LIGHT STAYS ON FOR ABOUT 15 MINUTES AND THEN GOES OFF. REPLACED THE LAV LIGHT ASSEMBLY AS IT WAS SUSPECTED AN INTERMITTENT SHORT. NO OTHER REPORTED INCIDENTS AFTER LIGHT ASSY REPLACEMENT.