As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE CREW REPORTED A BLEED 1 OVER-TEMP INDICATION IN ICING CONDITIONS. THE AIRCRAFT RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NR 1 PACK FAN AIR VALVE FILTER, OPERATIONALLY TESTED THE SYSTEM AND CLEARED THE DISCREPANCY.