As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT OF FL200 RT SIDE SIDE WINDOW OVERHEAT LIGHT CAME ON. COMPLIED WITH QRH AFTER 5 MIN IT WAS SWITCHED BACK ON, OVERHEAT LIGHT REMAINED EXTINGUISHED FOR THE ENTIRE FLT. PERFORMED WINDOW HEAT CONTROL UNIT SYSTEM TEST. NORMAL FUNCTIONS AND BITE TEST IAW AMM 30 41 11 710 801. OPERATIONAL CHECK OK.