As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT DURING A FLIGHT AT FL280 WHEN THEY RECEIVED A CAS MSG INDICATING ACS LOW INFLOW THEY FOLLOWED THE ACFT'S QRH FOR THE SITUATION & AFTER A COUPLE OF ATTEMPTS TO CLEAR THE FAULT, AS A PRECAUTION, THEY DECIDED TO DESCEND & LANDED. TROUBLE SHOT THE SYS & CHECKED THE ADJUSTMENT OF THE FIREWALL SOV MICRO SWITCH. NO DEFECTS WERE NOTED, THE SYS WAS FOUND TO FUNCTION NORMALLY.