As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI - DURING CRUISE FLIGHT, THE FIRE SYSTEM FAULT CAUTION ILLUMINATED. PER THE CHECKLIST PROCEDURE, THE TEST BUTTON WAS PUSHED AND THE "OK" GREEN STATUS MESSAGE WAS DISPLAYED. MAINTENANCE CYCLED THE CIRCUIT BREAKERS N1, N2, R2 & R3. NO FAULTS RECORDED IN THE MDC. C/W GROUND TEST IAW AMM 26-10-00 PAGES 501-503. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.