Table of Contents
Advertisement
MON XX:XX AM – HIGH PRESSURE
The chiller is shut down because condenser pressure
has increased to 265 PSIG, 1827.2 kPa (R-22); 180
PSIG, 1241.4 kPa (R-134a). System will be allowed to
restart when pressure decreases to 205 PSIG, 1413.5
kPa (R-22); 120 PSIG, 8274 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 located on the condenser. This message is
prompted by the opening of the HP safety control con-
tacts. To restart 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 tem-
perature is outside the range of –2.5°F (–19.2°C) to
+25°F (–3.9°C) continuously for 10 minutes. To restart
the chiller, press COMPRESSOR switch to STOP/RE-
SET switch to STOP/RESET position and then to START
position. On Brine applications (program jumper JP3
removed), this check is not performed when the evapo-
rator transducer is reading a pressure below its "out-
of-range" threshold.
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 initiated a shutdown. To re-
start 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 (43.4°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 (43.4°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.
24
• 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 (104.5°C). The sys-
tem will be allowed to restart when the temperature
has decreased to 219°F (104.0°C). Temperature is
sensed by a thermistor RT2. To restart the chiller, press
COMPRESSOR 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 (82.3°C). The system will be
allowed to restart when the temperature decreases to
179°F (81.7°C). The temperature is sensed by ther-
mistor RT3. To restart the chiller, press COMPRES-
SOR switch to STOP/RESET position and then to the
START position.
MON XX:XX AM – OIL PRESSURE TRANSDUCER
The chiller is shut down because the oil pressure has
increased to 125 PSID, 861.8 kPa (during the first 7
minutes of compressor operation) 60 PSID, 413.7 kPa
(after the first 7 minutes of compressor operation). The
chiller will be allowed to restart when the oil pressure
decreases to 59 PSID, 406.8 kPa. To restart the chiller,
press COMPRESSOR switch to STOP/RESET posi-
tion 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 24.2 PSIG,
166.9 kPa (R-22), 6.8 PSIG, 46.9 kPa (R-134a); or a
pressure greater than 300 PSIG, 2069 kPa (R-22 or
R-134a). This is generally indicative of a defective con-
denser transducer or the transducer has been discon-
nected. After the problem has been corrected, the
chiller can be restarted. To restart, press COMPRES-
SOR 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.
YORK INTERNATIONAL
Hide quick links:
Advertisement
Table of Contents
