As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED PROP DEICE CAUTION ON A FEW MINUTES AFTER SELECTED. SWITCH RECYCLED A FEW TIMES, CAUTION EVENTUALLY WENT AWAY, NO OTHER CAUTIONS NOTED. PROBLEM COULD NOT BE DUPLICATED AT MAINTENANCE BASE. TESTING OF COMPONENTS DID NOT REVEAL ANY FAULTS. A DIRTY SLIP RING MAY HAVE BEEN THE CAUSE. (TC NR 20091130004)