York YCAS0098EB, Installation Operation & Maintenance, Page: 134 / 184

134
JOHNSON CONTROLS
2. STATUS KEY: GENERAL STATUS MESSAGES & FAULT WARNINGS
2.1 GENERAL
Pressing the Status key displays the current chiller or
individual system operational status. The messages
displayed include running status, cooling demand, fault
status, external cycling device status, load limiting, and
anti-recycle timer status. The display will show one
message relating to the “highest priority” information
as determined by the microprocessor.
For individual system status or fault messages, the
display shows information for up to two refrigerant
systems.
The main categories of messages available using the
Status key are:
2.2 General Status Messages
2.3 Unit Warnings
2.4 Anticipation Control Status Messages
2.5 Chiller Fault Status Messages
2.6 System Fault Status Messages
These messages are described in detail below, with
examples of each display. In each example “#” is used
as applicable to represent the system number where
messages apply to individual systems.
2.2 GENERAL STATUS MESSAGES
Unit Switch OFF:
This message indicates that the Chiller ON / OFF Switch
on the Control Panel is in the OFF position which will
not allow the chiller to run.
Schedule Shutdown:
This message indicates that the that the chiller has been
shut down by the daily schedule programmed into the
Clock - Set Schedule / Holiday system (Section 7.3).
Compressors Running:
This message indicates that the respective compressor
is running due to demand.
Remote Controlled Shutdown:
This message indicates that either an ISN or RCC (Re-
mote Control Center) has turned the unit OFF through
the RS-485 port.
U N I T S W I T C H O F F
S H U T D O W N
D A I L Y S C H E D U L E
S H U T D O W N
S Y S # C O M P R U N N I N G
S Y S # C O M P R U N N I N G
R E M O T E C O N T R O L L E D
S H U T D O W N
29023A
Micro Panel Contents