As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH BOTH ENGINES SHUTDOWN AND APU BLEEDS OFF. DEICE PRESSURE SHOWS 24 PSI AND BOOTS STILL INFLATED. R & R APU LINK UP PRESSURIZATION CHECK VALVE. RAN APU DEICE PRESSURE WAS NORMAL, BOOTS PARTIALLY INFLATED WITH OUT LIGHTS ILLUMINATING. NORMAL 8 OPERATION.