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. LIGHT EXTINGUISHED AFTER WORKING WITH CROSSFEED. LEFT SUPPLY TEMPERATURE HIGH LIGHT THEN ILLUMINATED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE RIGHT THERMAL CONTROL UNIT AND RIGHT LOW TEMPERATURE SENSOR. OPERATIONAL CHECK OK, AND AIRCRAFT RETURNED TO SERVICE.