As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY EVACUATION SYSTEM IS EMITTING LOW LEVEL OFF BEAT SIGNAL. PULLED CIRCUIT BREAKER TO SILENCE ALARM, REVIEWED WDM TO VERIFY CIRCUIT BREAKER IS SOLELY FOR EVAC SIGNAL SYSTEM 25- 63-11 & -12. RDF-T :DISCONNECTED ALL DOORS EVAC UNIT & OVERSTAIR & RECONNECTED INDIVIDUAL EVAC PANEL ONE AT A TIME. NO HELP. PUT NEW PANEL AT CAPTAINS, NO HELP. OPEN