Status Key - York YCAL0019 Installation, Operation And Maintenance Manual

FORM 150.67-NM1
ISSUE DATE: 4/28/2017
Unit Status
Pressing the STATUS key will enable the operator to de-
termine current chiller operating status. The messages
displayed will include running status, cooling demand,
fault status and external cycling device status. The dis-
play will be a single message relating to the highest prior-
ity message as determined by the microprocessor. Status
messages fall into the categories of General Status and
Fault Status.
The following General, Safety, and Warning messages
are displayed when the STATUS key is pressed. Fol-
lowing each displayed message is an explanation per-
taining to that particular message.
General Status Messages
In the case of messages which apply to individual
systems, SYS 1 and SYS 2 messages will both be dis-
played and may be different. In the case of single sys-
tem units, all SYS 2 messages will be blank.
U N I T S W I T C H
S H U T D O W N
This message informs the operator that the 0 on the
control panel is in the OFF position which will not al-
low the unit to run.
R E M O T E C O N T R O L L E D
S H U T D O W N
The REMOTE CONTROLLED SHUTDOWN mes-
sage indicates that either an ISN system or RCC has
turned the unit OFF, not allowing it to run.
D A I L Y S C H E D U L E
S H U T D O W N
The DAILY SCHEDULE SHUTDOWN message in-
dicates that the daily/holiday schedule programmed is
keeping the unit from running.
JOHNSON CONTROLS

STATUS KEY

REMOTE STOP NO RUN PERM shows that either
the flow switch is open or a remote start/stop contact is
open in series with the flow switch. These contacts are
connected to J13-5. A 3-second delay is built into the
software to prevent nuisance shutdowns due to errone-
ous signals on the run permissive input.
S Y S
S Y S
SYS SWITCH OFF tells that the system switch under
OPTIONS is turned OFF. The system will not be al-
lowed to run until the switch is turned back ON.
This message informs the operator that the chilled liq-
uid temperature is below the point (determined by the
O F F
setpoint and control range) that the microprocessor
will bring on a system or that the microprocessor has
not loaded the lead system far enough into the loading
sequence to be ready to bring the lag system ON. The
lag system will display this message until the loading
sequence is ready for the lag system to start.
The COMPS RUNNING message indicates that the
respective system is running due to demand. The "X"
will be replaced with the number of compressors in
that system that are running.
SECTION 7 – UNIT CONTROLS
REMOTE STOP
NO RUN PERM
1 S Y S S W I T C H
2 S Y S S W I T C H
S Y S 1 N O C O O L
S Y S 2 N O C O O L
S Y S 1 C O M P S
S Y S 2 C O M P S
00066VIP
O F F
O F F
L O A D
L O A D
7
R U N X
R U N X
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