York MILLENNIUM YK, Operating & Maintenance, Page: 27 / 60

FORM 160.52-O1
27
YORK INTERNATIONAL
On Brine applications (program jumper JP3 removed),
this check is not performed when the evaporator trans-
ducer is reading a pressure below its “out-of-range”
threshold.
On Steam Turbine applications (Micro Board program
jumper JP4 removed), with EPROM version C.02F
(T).12 or later, this check is bypassed for the first 20
minutes of chiller run time and then performed at the
regular 10 minute intervals thereafter. This is to allow
for the additional time required to decrease the evapo-
rator pressure due to the longer acceleration time of
the steam turbine.
MON XX:XX AM – MOTOR CONTROLLER – EXT. RESET
The chiller is shut down because a current module (CM-
2 Electro-Mechanical starter application), or the YORK
Solid State Starter or the Variable Speed Drive initi-
ated a shutdown. To restart system, reset the external
device that caused the shutdown. The chiller will then
automatically restart.
NOTE: The following motor controller shutdowns do
not require an external reset to restart chiller.
Solid State Starter 110°F (43.3°C) start inhibit. Any-
time the chiller has been shut down for any reason,
this message will be displayed until the SCR heatsink
temperatures decrease to below 110°F (43.3°C).
MON XX:XX AM – POWER FAULT – AUTOSTART
The chiller is shut down because of a Solid State Starter
or current module (CM-2 Electro-Mechanical starter
application) “Power Fault” shutdown. The chiller will
automatically restart. This function is sensed by the
motor controller input to the digital input board. A power-
fault shutdown is initiated by the motor controller con-
tacts (CM-1) opening and reclosing in one second. If
Solid State Starter application, the shutdown could have
been caused by any of the following reasons. The ap-
propriate light on the Solid State Starter Logic Board
will be illuminated.
• Phase rotation/loss
• Trigger Board out of lock (OOL)
• Power Fault
• Half Phase
MON XX:XX AM – HIGH DISCHARGE TEMP
The chiller is shut down because the discharge tem-
perature has increased to 220°F (104°C). The system
will be allowed to restart when the temperature has
decreased to 219°F (103°C). Temperature is sensed
by a thermistor RT2. To restart the chiller, press COM-
PRESSOR switch to STOP/RESET position and then
to the START position.
MON XX:XX AM – HIGH OIL TEMP
The chiller is shut down because the oil temperature has
increased to 180°F (82.2°C). The system will be allowed
to restart when the temperature decreases to 179°F
(81.6°C). The temperature is sensed by thermistor RT3.
To restart the chiller, press COMPRESSOR switch to
STOP/RESET position and then to the START position.
MON XX:XX AM – HIGH OIL PRESSURE
The chiller is shut down because the oil pressure has
increased to 90 PSID (620 kPa). The chiller will be al-
lowed to restart when the oil pressure decreases to 59
PSID (407 kPa). To restart the chiller, press COMPRES-
SOR switch to STOP/RESET position and then to the
START position.
MON XX:XX AM – FAULTY COND PRESSURE XDCR
The chiller is shut down because the condenser trans-
ducer is indicating a pressure of less than 6.8 PSIG
(46.8 kPa) (R-134a); or a pressure greater than 300
PSIG (2068 kPa) (R-134a). This is generally indicative
of a defective condenser transducer or the transducer
has been disconnected. After the problem has been
corrected, the chiller can be restarted. To restart, press
COMPRESSOR switch to STOP/RESET position and
then to START position.
MON XX:XX AM – FAULTY OIL PRESSURE XDCR
The chiller is shut down because either the high side
or low side oil pressure transducer was out-of-range
(displaying x’s) while chiller was running. To restart
chiller, press COMPRESSOR switch to STOP/RESET
position and then to START position.
VANE MOTOR SWITCH OPEN
The chiller is shut down because a system-start se-
quence has been initiated, but the pre-rotation vanes
are not fully closed.
MON XX:XX AM – STARTER MALFUNCTION DETECTED
The chiller is shut down because the Control Center
has detected a motor-current value greater than 15%
FLA for 10 seconds minimum anytime when the com-
pressor-start signal is not energized. To restart the
chiller, press COMPRESSOR switch to STOP/RESET
position and then to the START position.