As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT DEPARTED KAPF. AT 1500 FEET EMERGENCY PRESS ANNUNCIATION LIGHT ILLUMINATED. AIRCRAFT RETURNED TO KAPF. ACM WAS DEFERRED AND AIRCRAFT FLOWN TO MAINTENANCE AT KMCO. MAINTENANCE AT KMCO FOUND THE 410 DEGREE TEMP SWITCH INOP AND THE 450 DEGREE TEMP SWITCH ERRATIC. SWITCHES WERE REPLACED AND MEL CLEARED.