As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) NR 1 BLEED HOT CAUTION ILLUMINATED IN CRUISE. QRH PROCEDURE CARRIED OUT AND THE LIGHT EXTINGUISHED. INVESTIGATION BY MAINTENANCE DISCOVERED THAT THE LH NACELLE DUCT LEAK OVERTEMP SWITCH WAS FAULTY. THE SWITCH WAS REPLACED AND THE SYSTEM TESTED SERVICEABLE. THE AIRCRAFT WAS SUBSEQUENTLY RELEASED FOR SERVICE.