As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH 7248 CLT. THE CREW REPORTED A LAV SMOKE WARNING DURING TAKEOFF WITH AN ASSOCIATED SMELL OF SMOKE THAT CLEARED PRIOR TO LANDING. THE AIRCRAFT RETURNED TO THE FIELD WHERE MAINTENANCE RAN BOTH ENGINES AND THE APU TO ATTEMPT TO DUPLICATE THE PROBLEM. THE OPERATIONAL CHECKS WERE OK AND THE AIRCRAFT CONTINUED REVENUE SERVICE.