York MILLENNIUM, Руководство по эксплуатации

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YORK INTERNATIONAL
FORM 150.62-NM3
Optional Discharge Pressure Trans-
ducers must be installed on the chiller
for this function.
When this message appears, suction pressure limiting
is in effect.
Suction Pressure Transducers are re-
quired for this function.
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.
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.
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.
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.
This message is displayed when the RCC is loading all
history buffer data, current data, and schedule data.
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
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.
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.
S Y S 1 S U C T L I M I T I N G
S Y S 2 S U C T L I M I T I N G
S Y S 1 L O A D L I M I T X X %
S Y S 2 L O A D L I M I T X X %
M A N U A L
O V E R R I D E
L O S S O F C O M M L I N K
T O U N I T P A N E L
P L E A S E W A I T . . . . . . . . .
I N I T I A L I Z I N G R E M O T E
U N I T F A U L T :
L O W A M B I E N T T E M P
S Y S 1 Z O N E T H E R M O F F
S Y S 2 Z O N E T H E R M O F F
F U N C T I O N N O T A L L O W E D
U N D E R C O N D I T I O N S
U N I T F A U L T :
L O W L I Q U I D T E M P
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