Specifications

46 YORK INTERNATIONAL
SECTION 6
TROUBLE SHOOTING
TABLE 1 - CAUSES OF NORMAL AND SAFETY SYSTEM SHUTDOWNS IN ACCORDANCE WITH THE
MICROCOMPUTER CONTROL CENTER DISPLAY
CONTROL CENTER DISPLAY GOVERNING CONTROL FUNCTION
DAY OF TIME CAUSE OF METHOD OF
DESCRIPTION
OPERATING POINT
WEEK OF DAY SHUTDOWN RESTART
ON RISE ON FALL
MON. 10:00 AM Low Water Autostart Low Water (LWT) Chilled water 4°F below chilled
Temperature setpoint water setpoint
MON. 10:00 AM Low Water Autostart Low Water (LWT) Chilled water 4°F below chilled
Temperature VSD setpoint water setpoint
MON. 10:00 AM Flow Switch Autostart Flow Switch
MON. 10:00 AM System Cycling Autostart A remote command
(computer relay contact or
manual switch)
MON. 10:00 AM Multi-Unit Cycling Autostart (Optional)
Lead-Lag Sequence Control
MON. 10:00 AM Internal Clock Autostart Internal Clock
MON. 10:00 AM AC Undervoltage Autostart <15% FLA for 25
continuous seconds
MON. 10:00 AM Power Fault Autostart CM-2 Current Module or
Solid State Starter
Remote Stop Energy Management System
MON. Anti-Recycle, Anti-Recycle
20 Min. Left Timer
MON. 10:00 AM Low Evap. Pressure Low Evap. Pressure 5.43 PSIA 5.42 PSIA
Transducer (LEP)
MON. 10:00 AM Low Evap. Pressure LEP external control Set to Job Spec. Set to Job Spec.
Brine (Brine units only)
MON. 10:00 AM Low Oil Low Oil Press. Transducer (OP) 20 PSID 15 PSID
Pressure High Oil Press. Transducer (OP)
MON. 10:00 AM High Pressure High Pressure 15 PSIG 9 PSIG
Safety Control (HP)
MON. 10:00 AM Evap. Transducer Evap. Pressure Transducer
or Probe Error or Leaving Chilled Water
Thermistor (RS1)
MON. 10:00 AM Motor Controller - CM-2 or Solid State Starter or
Ext. Reset Variable Speed Drive
MON. 10:00 AM High Discharge Discharge Temperature 220°F 219°F
Temperature Thermistor (RT2)
MON. 10:00 AM High Oil Oil Temperature 180°F 179°F
Temperature Thermistor (RT3)
MON. 10:00 AM Power Autostart Micro Board undervoltage 8.29 VDC 7.84 VDC
Failure circuit on 5V unregulated
supply
MON. 10:00 AM Power Micro Board undervoltage 8.29 VDC 7.84 VDC
Failure circuit on 5V unregulated
supply
SHUTDOWN CAUSE
CONTROL CENTER DISPLAY