York YK-EP Operation And Maintenance Manual page 259

7. Press the Enter key. The following steps will be performed:
a. Erasing - During this procedure, the program in the microboard Flash Memory will be
erased. A green bar reflects the progress of this procedure. The red LED next to this bar
illuminates while this procedure is in progress.
b. Programming - During this procedure, the program in the Program card is downloaded
into the microboard Flash memory. A green bar reflects the progress of this procedure.
The red LED next to this bar illuminates while this procedure is in progress.
c. Verifying - During this procedure, a check- sum test is performed on the new program in
the microboard Flash Memory. A green bar reflects the progress of this procedure. The
red LED next to this bar illuminates while this procedure is in progress.
The microboard 7-segment LED Displays (U25 and U26) display the steps of the
programming process while they are in effect. During the Erasing procedure, "Er"
displayed. During the Programming procedure, "Pr" is displayed. During the Verifying
procedure, "Ch" is displayed.
At the completion of the re-programming process, if it is successful, "Flash Has Been
Successfully Programmed" is displayed and "Operation Successful" is displayed in the
Status Code box. Otherwise, a message in the status box indicates the step that failed.
8. Remove power from OptiView™ Control Center.
9. Remove Program card from Microboard connector J26 by lightly pushing the SD card in and
then releasing pressure. The SD card should pop out slightly allowing for removal.
10. Reposition Microboard DIP Switch SW1 position 4 to OFF.
11. Apply power to the OptiView™ Control Center.
Result The re-programming procedure is now complete.
YK-EP Style B Centrifugal Chiller 259