As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT FROM PDX TO LMT CREW RECEIVED A WINDSHIELD HOT CAUTION LIGHT, DUE TO ICING CONDITIONS A DECISION WAS MADE TO RETURN TO PDX. MAINTENANCE REPLACED THE FIRST OFFICER WINDSHIELD TEMPERATURE CONTROLLER. OPERATIONAL CHECK GOOD. AIRCRAFRT RETURNED TO SERVICE.