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Optional Discharge Pressure Trans-
ducers must be installed on the chiller
for this function.
S Y S
1
S U C T
S Y S
2
S U C T
When this message appears, suction pressure limiting
is in effect.
Suction Pressure Transducers are re-
quired for this function.
S Y S
1
L O A D
S Y S
2
L O A D
This message indicates that load limiting is in effect.
The percent of the limiting will be displayed as well.
This limiting could be due to the load limit input be-
ing enabled or the RCC could be sending a load limit
command.
S Y S
1
Z O N E
S Y S
2
Z O N E
Condensing Unit Only – These messages indicate that
the zone thermostats for system 1 and system 2 are open.
These messages will only be displayed when the con-
trol mode is programmed for Suction Pressure control.
M A N U A L
O V E R R I D E
This message is displayed when the daily schedule has
been overridden and the unit is in manual override mode.
This will indicate that the Daily Schedule is being ig-
nored and the unit will start-up when demand is present.
L O S S
O F
C O M M
T O
U N I T
P A N E L
This message is displayed when the Chiller Control
Panel has not responded for 5 minutes. This message
will also be displayed on RCC power up.
YORK INTERNATIONAL
L I M I T I N G
L I M I T I N G
L I M I T
X X %
L I M I T
X X %
T H E R M
O F F
T H E R M
O F F
L I N K
P L E A S E
W A I T . . . . . . . . .
I N I T I A L I Z I N G
This message is displayed when the RCC is loading all
history buffer data, current data, and schedule data.
F U N C T I O N
N O T
U N D E R
C O N D I T I O N S
This message is displayed when any data key is pressed
when the current data is not valid. This will occur be-
fore and during the loading of all unit data. It is also
displayed for a few seconds when the user tries to
change the setpoint, schedule or load limiting when the
chiller is in local control mode.
Fault Status Messages
A number of possible fault messages may appear when
the STATUS key is pressed. Whenever a fault message
appears, the safety thresholds on the unit have been
exceeded and the entire unit or a single system will be
shut down and in some cases locked out.
• Unit Faults
U N I T
F A U L T :
L O W
A M B I E N T
The Low Ambient Temp Cutout is a safety shutdown
designed to protect the unit from operating in a low
ambient condition. If the outdoor ambient temperature
falls below the programmable cutout, the chiller will
shut down. Restart can occur when temperature rises
2° above the cutoff.
U N I T
F A U L T :
L O W
L I Q U I D
The Leaving Chilled Liquid Temp Cutout protects the
chiller from an evaporator freeze-up should the chilled
liquid temp drop below the freeze point. The situation
could occur under low flow conditions or if the micro
panel setpoint values are improperly programmed. Any-
time the leaving chilled liquid temperature (water or
glycol) drops below the cutout point, the chiller will
shutdown. Restart can occur when chilled liquid tem-
perature rises 2°F above the cutout.
FORM 150.62-NM3
R E M O T E
A L L O W E D
2
T E M P
T E M P
5
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