As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HEATER INSPECTION REVEALED THE CORRECT TYPE OF FUSE WAS INSTALLED. ACTUATION OF THE OVERHEAT PROBE FAILED TO BLOW THE FUSE. FURTHER INSPECTION REVEALED THAT THE 3 OHM 10 WATT RESISTOR, LOCATED IN THE WIRING BETWEEN THE OVERHEAT PROBE AND THE FUSE, WAS 'OPEN'. THE RESISTOR WAS REPLACED AND THE SYSTEM FUNCTION TESTED SATISFACTORY.