As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ICE PROTECTION TEMPERATURE LOW LIGHT REMAINED ON AFTER TAKEOFF WITH AIRFOIL ICE PROTECTION SYSTEM ACTIVATED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RIGHT ELECTRONIC THERMAL CONTROL UNIT, LOW TEMPERATURE SENSOR, AND LOW TEMPERATURE SENSOR CANNON PLUG. OPERAITONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.