As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EVAC ALARM ACTIVATED. DOOR 1 RH COMMAND SWITCH IN ON POSITION. MECHANICS FOUND THAT DOOR 1 RIGHT COMMAND SWITCH WAS IN THE "ON" POSITION. SELECTED THE SWITCH TO THE "OFF" POSITION AND THE SYSTEM CHECKED OUT NORMAL. NO OTHER HITS SINCE.