The "Persistent" (PSt) Memory Cannot be Read.
At Power-Up, part or all of the System Board Persistent Memory could Not be Read. The Persistent Memory Retains all of the Programming Information, such as Filter Cycles, Set Temp, User Settings and Configuration Settings, and does not require any form of Power or Battery for Retention. This indicates a Possible Problem with the System Board. Try Turning the Power OFF and back ON again, or contact your Dealer or Service Organization.
