As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 2803 THE CREW REPORTED THE APU FIRE DETECTOR LIGHT WOULD NOT TEST. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED OPERATIONAL CHECK OF FIRE DETECTION SYSTEM IAW ERJ AMM 26-10-00. THE OPERATIONAL CHECK WAS GOOD, NO PARTS REMOVED OR REPLACED. THE AIRCRAFT WAS RETURNED TO SERVICE.