As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WINDSHIELD OVERHEAT ANNUNCIATOR ILLUMINATED WITH WINDSHIELD HEAT SELECTED ON IN THE LOW POSITION. RAN CHECKLIST AND SELECTED OFF. CONDITION OCCURED ABOUT 30 TO 60 SECONDS AFTER SELECTING ON. HOT BURNING ODOR WAS PRESENT.KSPI-KLAL. TROUBLESHOT PROBLEM DOWN TO A BLOWN FUSE INSIDE OF WINDSHIELD TEMP CONTROLLER. REMOVED CONTROLLER P/N 9912085-6 S/N 9AV134 AND INSTALLED NEW CONTROLLER PIN 9912085-6 S/N 8BC167 IAW CESSNA CITATION 560 AMM SECTION 30-41-02. OPS CHECK SATISFACTORY.