As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING FLIGHT THEY RECEIVED A BLEED 1 LOW TEMPERATURE MESSAGE IN ICING CONDITIONS. THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE FAN AIR VALVE THERMOSTAT AND THE FAN AIR VALVE. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.