As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT, A VERY STRONG ODOR WAS OBSERVED WITH SMOKE AT ROW 15A. GASPER FAN CIRCUIT BREAKER POPPED. AIRCRAFT RETURNED TO BLOCKS WITHOUT INCIDENT. VERIFIED GASPER FAN OVERHEATED, DISCONNECTED CANNON PLUG. PLACED ON MEL 21-24, PLACARD NR 411586.