As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT RETURNED TO THE GATE AFTER RECEIVING A LEFT HAND PROPELLER HEAT FAIL WARNING MESSAGE. MAINTENANCE INSPECTED AND CLEANED THE LEFT HAND PROPELLER BRUSH BLOCK, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-61-05. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.