As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED A LAV SMOKE WARNING INDICATION AFTER TAKEOFF. THERE WAS NO ODOR OR VISUAL INDICATIONS OF SMOKE. THE MESSAGE CLEARED ON ITS OWN WHILE THE AIRCRAFT WAS RETURNING TO FIELD. THE AIRCRAFT WAS PREPARED FOR A FERRY FLIGHT TO CMH FOR FURTHER TROUBLESHOOTING