As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AT CRUISE THE CREW REPORTED UPON OPENING THE FLIGHT DECK HEAT VALVE THE BAGGAGE FIRE LIGHT ILLUMINATED INTERMITTENTLY. MX GAINED ACCESS TO ALL 3 SMOKE DETECTORS WITH ENGINE AND APU RUNNING FOR OVER AND HOUR VERIFIED NO SMOKE, AN OPS CHECK OF THE SYS REVEALED NO ISSUES. (K)