As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL AND ACTN LIGHTS ARE ILLUMINATED ON PRESSURIZATION PANEL. ACFT GROUNDED. CYCLED CONTROL SWITCH TO MANUAL AND BACK, LIGHTS WENT OUT. PERFORMED AUTO FAIL LIGHT ON FAULT ISOLATION IAW FIM 21-31, TASK 827 AND BITE TEST FIM 21-31, TASK 801. NO CURRENT FAULTS. PERFORMED GROUND VERIFICATION OF AUTO CONTROLLERS. BOTH SYSTEMS OK.