As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACK---CO3223, CREW REPORTED ELECTRICAL SMOKE MASTER (WARNING ILLUMINATED) AND SMOKE IN COCKPIT. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED BOTH ENGINE COMPARTMENTS, AIR CONDITIONING PACK COMPARTMENTS, AND ELECTRICAL COMPARTMENTS AND NO DEFECTS NOTED. RAN ENGINES IAW ATR42 MM 72-00-00 AND PACKS IAW ATR42 MM 21-10-00. NO SMOKE OR DEFECTS NOTED. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.