As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AFT LAV EMERGENCY RETURN FLIGHT. INSPECTED AND OPS CHECKED#1 AND #2 PACKS AND GALLEY HEATER FOR PROPER OPERATION. OPS CHECK GOOD, NO FAULTS FOUND AT THIS TIME IAW CRJ AMM 21-51-00 AND 21-23-64. DETERMINDED DRYOUT PROCEDURE WAS NOT COMPLETED DURING RECOVERY PRESSURE WASH.