York MILLENIUM YCAS Series, Installation Operation & Maintenance, Page: 109 / 156

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YORK INTERNATIONAL
FORM 201.18-NM6
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 dis-
played include running status, cooling demand, fault
status, external cycling device status, load limiting, and
anti-recycle timer status. The display will show one mes-
sage relating to the “highest priority” information as
determined by the microprocessor.
For individual system status or fault messages, the dis-
play shows information for up to two refrigerant sys-
tems.
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 ex-
amples of each display. In each example “#” is used as
applicable to represent the system number where mes-
sages 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
8