As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECIRC AIR FAIL MSG DURING ENG START FA IN AFT GALLEY REPORTED ELECTRICAL SMELL AT SAME TIME. R/R BOTH RECIRC FILTERS PER A220 AMP 21-22-03. REMOVED RECIRC FAN PER A220 AMP 21-22-01. INSTALLED PER A220 AMP 21-22. NO HELP. T/S PER EFIM INSTALLED DCM 1A SLOT 567 NO HELP RETURNED TO ORIGINAL. R/R DCM 1B SLOT 8,9,10. RECIRC FAIL GONE. NO FAULTS PER A220 AMP 31-43. T/S PER EFIM SOLUTION #1-5005. OK TO CLOSE THE LOG. (LP# 6735346)