Johnson Controls YORK YK Style G OPTIVIEW User Manual

FORM 160.54-O1
ISSUE DATE: 9/10/2014
JOHNSON CONTROLS
184
SECTION 3 - DISPLAY MESSAGES
Proximity Probe – Low Supply Voltage
(Style E and earlier chillers with G, H, or J compres-
sors and Style F and later chillers with J or H3 com-
pressors).
This message indicates the +24VDC power sup-
ply voltage to the Proximity Probe has decreased to
+19.0VDC. This is below the minimum level required
for reliable operation. The chiller will automatically re-
start when the voltage increases to greater than or equal
to 19.7VDC.
Oil – Variable Speed Pump – Drive Contacts
Open
The Oil Pump Variable Speed Drive has shut down
the chiller by opening its status contacts connected to
the I/O Board TB3-70. The Drive initiates a shutdown
anytime its internal protection circuits will not permit
the Drive to run. The contacts remain open until its
internal protection circuits are satisfied it is safe to
operate. Some Drive initiated shutdowns require AC
Power to be cycled to clear the fault. Refer to Op-
tiView Control Center – Service Instructions (Form
160.54-M1). The chiller will automatically restart
when the contacts close.
MOD “B” SOLID STATE STARTER CYCLING
SHUTDOWN MESSAGES
LCSSS Initialization Failed
When AC Power is restored to the system after a pow-
er failure, an initialization process occurs wherein the
Control Center attempts to establish communications
through the serial communications link with the Liquid
Cooled Solid State Starter. If communications are not
established within 10 consecutive attempts, a cycling
shutdown is performed and this message is displayed.
The Control Center attempts to establish communica-
tions until successful.
LCSSS – Serial Communications
After communications have been successfully estab-
lished in the Initialization process, the Control Center
initiates a data transmission to the Liquid Cooled Solid
State Starter on the serial communications link every 2
seconds. After these communications have been estab-
lished, if the Control Center does not receive a reply
within 10 consecutive attempts, a cycling shutdown is
performed and this message is displayed. This same
cycling shutdown is performed, along with the same
message, if the Liquid Cooled Solid State Starter does
not receive a response from the Control Center after 10
consecutive attempts to communicate with the Control
Center after Initialization has been successfully com-
pleted. The Control Center attempts to establish com-
munications until successful.
LCSSS Shutdown – Requesting Fault Data...
The Liquid Cooled State Starter Logic/Trigger Board
has shut down the chiller but the Control Center has
not yet received the cause of the fault from the LC-
SSS, via the serial communications link. The LCSSS
shuts down the chiller by opening the Motor Controller
LCSSS Stop Contacts (K1 relay located on the starter
Logic/Trigger Board and connected between TB6-16
and TB6-53 in the Control Center). The Microboard,
in the Control Center then sends a request for the cause
of the fault to the Logic/Trigger Board over the serial
communications link. Since serial communications are
initiated every 2 seconds, this message is typically dis-
played for a few seconds and then replaced with one of
the following fault messages.
LCSSS – Stop Contacts Open
Refer to LCSSS Shutdown – Requesting Fault Data... on
Page 184. If the Control Center’s Microboard does not
receive the cause of a starter initiated shutdown with 20
seconds of the shutdown, it is assumed it is not forth-
coming and that message is replaced with this message.
The chiller can be started when the Motor Controller
LCSSS Stop Contacts close.
A missing interlock jumper between Starter Logic/
Trigger Board J1-1 and J1-12 will also produce this
message.
LCSSS – Power Fault
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the compressor motor current
in one or more phases has decreased to less than 10%
of the FLA for a minimum of 1 line cycle. This check
is inhibited during the first 4 seconds of System Run
and until the motor current is greater than 25% of the
Job FLA. The chiller will automatically restart upon
completion of System Coastdown.
LCSSS – Low Phase (X) Temperature Sensor
The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the temperature of the starter
phase A, B or C (designated as X in the message) Sili-
con Controlled Rectifier (SCR) Module has decreased
to less than 37°F. This would generally be indicative
of a disconnected or defective sensor. If all three SCR

Johnson Controls YORK YK Style G OPTIVIEW Specifications

General

Brand	Johnson Controls
Model	YORK YK Style G OPTIVIEW
Category	Chiller
Language	English