As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT PROP HEAT CAUTION LIGHT COMES ON AFTER ABOUT 2 MINUTES INNORM MODE. BLUE ADVISORY LIGHT ALSO GOES OUT. RETURNED TO GATE. MAINTENANCE INSPECTED PROP LEADS, ALL CHECKS GOOD. REPLACED BRUSH BLOCK ASSEMBLY (FOUND BRUSHES NOT MAKING CONTACT WITH PROP/SKIPPING) P/N 666000219, AND GROUND RAN AIRCRAFT. ALL CHECKS GOOD OF RT PROP DE-ICE.