As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROP DE-ICE CAUTION LT ILLUMINATED WHENEVER NR1 PROP DEICE GREEN LIGHT ON. LT GOES OUT WITH NR 2 DEICE OPERATING. DIVERTED, LANDING UNEVENTFUL. REPLACED NR 1 PROP DEICE LEADS (ALL 6) AND CALIBRATION AND FUNCTIONAL CHECK OF NR1 PROP IS GOOD IAW AMM TASK 61-10-06-000-805 AND 61-10-06-400-805. RETURNED TO SERVICE.