As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - INTERMITTENT FIRE SYSTEM FAULT STATUS MESSAGE. SYSTEM PLACED ON MEL 26-00-1. RETURNED TO SERVICE. 8/4 MEL CLEARED. REMOVED AND REPLACED FIDEEX CONTROL UNIT FOR PRECAUTIONARY MEASURES REF AMM 26-10-01-000-801 & 26-10-01-400-801 SYSTEM OPS CHECKS GOOD. RETURNED TO SERVICE.