As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SOLENOID FAILED IN ENERGIZED POSITION. THIS UNIT IS IN THE DUCTING DIVERTER VALVE MAKING IT SUBJECT TO MOISTURE. THIS CORRODES THE UNIT OVER TIME. IT FAILED ON, THUS DIVERTING AIR IN THE WRONG DIRECTION. HEAT WILL COME OUT OF OVERHEAD CABIN DUCTS.