As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. PERFORMED QRH PROCEDURES AND OVERHEAT LIGHT ILLUMINATED IMMEDIATELY AFTER SWITCH HAD BEEN IN THE OFF POSITION FOR 5 MINUTES. IN CRUISE, FL400 FOR 3 HRS. SAT -66 DEGREES CENTIGRADE. ACFT GROUNDED. FOUND CIRCUIT BREAKER ON P6-11 PANEL WINDOW HEAT POWER RIGHT SIDE OPEN. RESET CIRCUIT BREAKER IAW MM 20-60-01. PERFORMED WINDOW HEAT SYS OPS TEST REF MM 30-41-00. OPS NORMAL. NO FAULTS NOTED.