As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL410 FOR 2.5 TO 3 HOURS - AMBER CAS MSG ACM O'TEMP DISPLAYED & WITHIN 5 SEC AMBER EMERGENCY PRESSURIZATION DISPLAYED - PAX SAID SMOKE & FUMES IN CABIN. REQUESTED LOWER ALTITUDE & DESCENDING THROUGH FL390 BOTH CAS MSGS EXTINGUISHED - VERY LIGHT SMOKE. REPLACED SWITCH WITH NEW IAW THE DIRECTIONS STATED IN SL 680-21-02. OPS CHECK AND LEAK CHECK GOOD.