As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED, ON LIGHT EXTINGUISHED ON SHORT FINAL. LIGHT EXTINGUISHED AND ON LIGHT RETURNED DURING TAXI IN. ACFT GROUNDED IAW AMM 30-41-11/401. REMOVED WHCU M320. REMOVED WHCU M322 AND INSTALLED IT ON M320 POSITION FOR THE RIGHT SIDE WINDOW. INSTALLED SERVICEABLE WHCU ON TO M322 POSITION FOR LEFT SIDE WINDOW. BOTH WHCU SYSTEMS TESTED GOOD IAW AMM 30-41-11-710-801.