As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING WINDOW HEAT TEST R1 WINDOW WOULD NOT GO INTO OVERHEAT CONDITION WHEN TEST SWITCH IS SELECTED TO THE OVERHEAT POSITION. GROUNDED - YES. WHCU BITE FAULTS R1 P5-9 PWR CONT. REPLACED P5-9 WINDOW HEAT CONTROL MODULE AMM 30-41-41. ALT DEACTIVATION USED CH5, TABLE 3, ITEM 1. INSTL. TEST GOOD. PITOT PROBE, AOA SENSOR AND TAT PROBE HEATER SYSTEM TEST PASS AMM 30-31-00-730-801.