As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - ON FLIGHT 2286, DURING CRUISE FUEL INLET TEMP NR 2 WENT TO +75, RAN CHECKLIST AND TEMP CAME DOWN TO +71. ON GROUND TEMP CLIMBED TO +75 DURING TAI WITH FUEL PUMP ON. MAINTENANCE REMOVED AND REPLACED FUEL HEATER THERMAL ACTUATOR VALVE. RAN AIRCRAFT AND PERFORMED LEAK CHECK. AIRCRAFT RETURNED TO SERVICE.