26
YORK INTERNATIONAL
SYSTEM RUN LEAVING TEMP CONTROL .
This check is not performed when program jumper JP4
is removed (Steam Turbine applications).
MON XX:XX AM INTERNAL CLOCK AUTOSTART
The operator-programmed daily stop schedule has shut
down the chiller. The chiller will automatically restart
when the operator-programmed daily start schedule
indicates a start. It can be overriddden by pressing the
COMPRESSOR
switch to the
START
position.
REMOTE STOP
This message will be displayed when a remote device
(typically an Energy Management System) has com-
manded the chiller to shut down. The chiller will restart
upon application of a separate start signal from the re-
mote device. This message will only be displayed when
Control Center is in
REMOTE
mode.
ANTI-RECYCLE, XX MIN LEFT
The chiller may not restart more frequently than every
30 minutes. Displayed when chiller is shut down and
there is time remaining on the anti-recycle timer. In
normal operation, chiller cannot be restarted until
ANTI-RECYCLE, 00 MIN LEFT
is displayed. However,
when servicing the chiller, it may be desirable to inhibit
this 30-minute timer. If so, simply install a jumper plug
in the unmarked terminals of the Micro Board directly
under Auto-Restart jack.
This feature eliminated when program jumper JP4 is
removed (Steam Turbine applications).
WARNING: Remove this jumper after servicing. Fail-
ure to do this voids the Warranty.
MON XX:XX AM LOW EVAP PRESSURE
The chiller is shut down because the evaporator pres-
sure has decreased to 25.0 PSIG (172 kPa) (R-134a).
The chiller will be allowed to start when the pressure
increases to 25.1 PSIG (173 kPa) (R-134a). To restart
chiller, press the
COMPRESSOR
switch to the
STOP/
RESET
position and then to the
START
position.
MON XX:XX AM LOW EVAP PRESSURE BRINE
The chiller is shut down because the brine Low Evapo-
rator Pressure (LEP, not included with standard Con-
trol Center) safety contacts have opened. The brine
LEP safety is located external to the Control Center.
Safety cut-out settings will vary with the brine applica-
tion. To restart the chiller, wait until the safety contacts
close, press the
COMPRESSOR
switch to the
STOP/
RESET
position and then to the
START
position.
MON XX:XX AM OIL PUMP DRIVE AUTOSTART
The chiller is shut down because oil pump VSD inter-
nal protection circuit has initiated a drive shutdown. This
message will be displayed until the oil pump VSD in-
ternal protection circuit permits the drive to run.
MON XX:XX AM LOW OIL PRESSURE
The chiller is shut down because the oil pressure has
decreased to 15 PSID while running, or never achieved
25 PSID prior to compressor start during the oil pump
pre-lube run. The chiller will be allowed to restart when
the pressure increases to 25 PSID (173 kPa). Differen-
tial pressure is sensed by two pressure transducers.
To restart chiller, press
COMPRESSOR
switch to
STOP/
RESET
position and then to the
START
position.
MON XX:XXAM HIGH OIL FLOW
The chiller is shut down because the oil pressure is
< 35 PSID (241 kPa) for 5 continuous seconds during
the last 10 seconds of the compressor pre-lube or dur-
ing the first 15 seconds of SYSTEM RUN.
or
The oil pressure is < the programmed OIL PRESSURE
SETPOINT and the speed command is at 60Hz for 5
continuous seconds anytime after the first 30 seconds
of SYSTEM RUN.
MON XX:XX AM HIGH PRESSURE
The chiller is shut down because condenser pressure
has increased to 180 PSIG (1241 kPa) (R-134a). Sys-
tem will be allowed to restart when pressure decreases
to 120 PSIG (827 kPa) (R-134a). Pressure is sensed
by a High Pressure (HP) safety control that is located
on a mounting bracket above the oil-pump starter lo-
cated on the condenser. This message is prompted by
the opening of the HP safety control contacts. To re-
start chiller, press
COMPRESSOR
switch to the
STOP/
RESET
position and then to the
START
position.
MON XX:XX AM EVAP TRANS OR PROBE ERROR
The chiller is shut down because the leaving chilled water
temperature minus the evaporator saturation tempera-
ture is outside the range of 2.5°F (-19°C) to +25°F
(-3.9°C) continuously for 10 minutes. To restart the chiller,
press
COMPRESSOR
switch to
STOP/RESET
switch
to
STOP/RESET
position and then to
START
position.
