As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ENROUTE, RED "CABIN FIRE" ANNUNCIATOR ILLUMINATED TWICE DURING FLIGHT. RESULTING IN AN AIR DIVERSION. LANDING AND TAXI WERE UNEVENTFUL. FSR AND ENGINEERING ARE INVOLVED IN THE INVESTIGATION. R & R SMOKE DETECTOR WITH REPAIRED UNIT.