As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, WITH APPLICATION OF NR 1 FUEL HEAT, WARNING LIGHT CAME ON BRIGHT, THEN DIM AND THEN BRIGHT AGAIN. NR 1 OIL TEMPERATURE CONTINUED TO RISE TO 130 DEGREES. FLIGHT RETURNED TO DEN. *S/D* REPLACED NR 1 ENGINE ANTI-ICE HEAT VALVE, OPS CHECK GOOD.