Downloading A Program From A Program Card - York YK-EP Operation And Maintenance Manual

Downloading a program from a program card

About this task:
There are 3 steps to the re-programming process: Erase, Program and Veriflcation. Once the re-
programming process is initiated, it automatically proceeds through these steps to completion. It
cannot be manually terminated before completion. Therefore, once the process is initiated, the existing
on-board program will be erased and replaced by the program in the Program card.
Before proceeding, be absolutely certain the Program card is applicable to your chiller model. For
example, if your chiller is a YK-EP chiller, the Program card used MUST be for a YK-EP chiller. If a YS
chiller program is down-loaded into a YK-EP chiller, for example, the chiller will be rendered inoperable
until this procedure is repeated using the correct Program card!
A label affixed to the Program card contains the card version. The version is an alpha-numeric code
that identifies the chiller model applicability, language package and program revision level. The
version is as follows:
Figure 86: Card version nomenclature
Download the program as follows:
1. Remove power to OptiView™ Control Center.
2. Reposition Microboard DIP switch SW1 position 4 to ON.
3. Insert Program card into Microboard connector J26.
4. Restore power to OptiView™ Control Center. A white screen appears displaying "Flash Check-
sum Test" and the microboard 7-segment LEDs (U25 and U26) displays "Ch". While this is
displayed, the microboard is performing a checksum test on the Program card. This assures
the integrity of the card before the download procedure can begin. If the checksum test fails,
the card is defective or corrupted and the download procedure cannot be performed. If the
checksum test passes, the OptiView™ Flash PROGRAMMER Screen is displayed.
5. Press START key to start the downloading pro- cess. A dialog box appears asking if you
want to "Erase Onboard Flash and Re-Program from Pc Card‑". Do not proceed until you
understand the above caution!
6. Use the ► key to scroll to YES.
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CAUTION
YK-EP Style B Centrifugal Chiller