As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LEFT BLEED DUCT RED WARNING MESSAGE WITH ASSOCIATED AMBER MESSAGE DURING CLIMBOUT OF DAY. CREW RETURNED TO DAY AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED, REMOVED AND REPLACED HOT AIR SHUTOFF VALVE AND APU DUCT CLAMP, RETORQUED CLAMP AT PRECOOLER AND PERFORMED CHECKS USING AIRCRAFT MAINTENANCE MANUALS. AIRCRAFT RELEASED FOR SERVICE.