As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLOWER MOTOR WEARS OUT CAUSING BLOWER MOTOR TO START SMOKING FILLING THE AIRCRAFT WITH SMOKE. WHEN THE BLOWER MOTOR IS REMOVED AND INSPECTED. IT IS FOUND THAT THE BRUSHES ARE WORN OUT. RECOMMEND BLOWER ASSEMBLY BE CHANGED EVERY 1000 HOURS. IT WAS ALSO FOUND THAT WHEN THE BLOWER ASSEMBLY WEARS OUT NEITHER THE CIRCUIT BREAKER OR CURRENT LIMITER POPS.