As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START, AFTER CONDITION LEVERS MOVED TO MAX RPM, RECEIVED A MASTER WARNING FOR ELECTIC SMOKE. RELOCATED THE ACFT SO IT WAS FACING INTO THE WIND AND NO WIND BLOWING UP THE TAIL PIPES OF THE ENGINES. THE ENGINES WERE RUN AND ALL SYSTEMS WERE NORMAL NO FAULTS OR SMOKE WARNING FOUND.