JOHNSON CONTROLS
126
FORM 150.27-NM1
ISSUE DATE: 09/30/2015
SECTION 7 – UNIT CONTROLS
If Unit Type needs to be changed to make
the unit a liquid chiller, remove power
and then remove the jumper on J11-12.
Reapply 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 must 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 dam-
age 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. YCRL 0064 – 0156 chill-
ers will typically always be equipped with thermostatic
expansion valves.
Incorrect programming may cause dam-
age to compressors.
Also see
Figure 34 on page 128, Unit Keys Program-
ming Quick Reference List.
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, assure 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 – 10.0VDC
•
2.0 – 10.0VDC
•
0.0 – 20.0mA
•
4.0 – 20.0mA
