What was found
FLT 706, FLL-EWR. DIVERTED TO CHS. FUMES IN COCKPIT WITH BLOWER FAN WORKING PULSING HIGH PITCH NOISES WITH ASSOCIATED EXTRACT FAN FAULT, FUMES CONTINUED CAUSING A DIVERT TO CHS. ( EXTRACT FAN - NO AVNCS SYS FAULT ECAM CAUTION ); R & R EXTRACT FAN (18HQ) IAW AMM 21-26-51. OPS CHECK GOOD. MDDR 437772 CLEARED. MX4 UPDATED, PLACARD REMOVED, MCC NOTIFIED