As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 2802 THE CREW REPORTED THAT WHILE PARKED AT THE GATE RUNNING APU FOR ABOUT 20 MINUTES CLOSED THE MAIN DOOR AND ABOUT 30 SECONDS LATER HAD SMOKE IN THE COCKPIT AND CABIN. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND RIGHT SIDE AIR CYCLE MACHINE LOCKED. REMOVED AND REPLACED THE RIGHT SIDE AIR CYCLE MACHINE IAW EMB 135 AMM 21-51-03. THE OPERATIONAL CHECK WAS GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.