York YCAL Series, Installation Operation & Maintenance, Page: 127 / 174

FORM 150.66-NM3
ISSUE DATE: 09/25/2020
127
JOHNSON CONTROLS
SECTION 7 - UNIT CONTROLS
7
If unit type needs to be changed to
make the unit a liquid chiller, remove
power and then remove the jumper
J11­7 to J11­12 of the I/O board. Re -
apply power to the micropanel and the
microprocessor will store the change.
Option 15 – Refrigerant Type
R E F R I G E R A N T T Y P E
R - 4 1 0 A
Refrigerant type R-410A may be selected under Ser-
vice Mode. Refrigerant type is displayed under the
OPTIONS key, but is only programmable in Service
Mode.
Incorrect programming may cause
damage to compressors.
Option 16 – Expansion Valve Type
E X P A N S I O N V A L V E T Y P E
T H E R M O S T A T I C
Expansion valve type, thermostatic or electronic
may be selected under Service Mode. Expansion valve
type is displayed under the Options key, but is only pro-
grammable in Service Mode. YCAL 0041 - 0071chill-
ers will typically always be equipped with thermostatic
expansion valves.
Incorrect programming may cause
damage to compressors.
Also see the UNIT KEYS PROGRAMMING QUICK
REFERENCE LIST in Table 18.
Option 17 – Flash Card Update
F L A S H C A R D U P D A T E
D I S A B L E D
A Flash Card is used to input the operating program
into the chiller IPU. A Flash Card is used instead of an
EPROM. Normally, a Flash Card update is not required
and the message above will be displayed.
If the operating software is to be updated, insert the
Flash Card into the Flash Card input port. Turn off the
unit switch and set the FLASH CARD UPDATE TO
“ENABLED” using the ↑ and ↓ keys.
F L A S H C A R D U P D A T E
E N A B L E D
Press the ENTER key and the following message will
be displayed until the update has been completed. The
keypad and display will not respond during the update.
DO NOT reset or power down the chiller until the up-
date is completed.
F L A S H C A R D U P D A T I N G
P L E A S E W A I T . . .
After the update is completed, an automatic reboot will
occur. If an error occurred, the following message will
appear with the error code and no reboot will occur:
F L A S H C A R D U P D A T E
E R
R O R XXXXX
If the update resulted in an error, the original program
will still be active. When an error occurs, ensure the
correct Flash Card was utilized. Incorrect chiller soft-
ware will cause an error. If this is not the case, the
Flash Card is most likely defective or the IPU and I/O
combo board is bad.
Option 18 – Remote Temperature Reset
R E M O T E T E M P R E S E T
I
N P U T XXXXXXXXXXXXXX
Remote Temp Reset input selection is programmable
according to the type of input utilized. The following
options are available:
• DISABLED (default)
• 0.0 – 10.0V (DC)
• 2.0 – 10.0V (DC)
• 0.0 – 20.0 mA
• 4.0 – 20.0 mA
The options display message for Re -
mote Temp Reset Input only appears if
the Temp reset Option is enabled under
Service Mode.