As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALT AUTO 1 STATUS MESSAGE APPEARS AFTER AC TRANSFER DURING ENGINE START. ACCOMPLISHED CABIN CONTROLLER BITE PER FIM 21-31-809, FAULTED SELECTOR, NO FAULT INDICATED WHEN SELECTED VERIFY. FAULT CLEARED. TRANSFERED POWER SEVERAL TIMES 24-22-00 NO FAULTS NOTED.