FORM 160.55-O1 (920)
141
YORK INTERNATIONAL
TABLE 1
– CAUSES OF NORMAL AND SAFETY SYSTEM SHUTDOWNS IN ACCORDANCE WITH THE
CONTROL CENTER DISPLAY - CONTINUED
PROGRAMMED
START-UP OF
PROBABLE CAUSE
SETPOINTS
SYSTEM AFTER
AND SERVICE
BY OPERATOR
SHUTDOWN
REQUIRED
Will start at 59 PSID when compressor switch is
This Shutdown is provided to check on Oil pressure
placed to STOP/RESET and then START.
Transducers for failure in the high state. Replace Oil
Pressure Transducer in oil sump or compressor.
Restart automatically after Vane Motor arm linkage
Vanes are set improperly. Reset vane linkage, check
is set properly. Press STOP/RESET and then
vane positions using the Service key switch and proper
START switch.
keys on the
OptiView
Control Center or switch
of capacity board of Variable Speed Drive.
Press compressor STOP/RESET switch and then
Check motor starter operation. Motor current value
START switch.
greater than 15%.
Watchdog timer circuit has reset software program.
Chiller will automatically restart.
Reprogram the Control Center Setpoints and
Weak Battery.
proceed with Normal Start-up.
Replace RTC-IC chip U16.
Press STOP/RESET switch and then START
Oil Temperature Thermistor disconnected from Analog
switch.
Input Board. Reconnect or replace open sensor.
Press STOP/START switch and then START
Faulty Discharge Temperature Thermistor (RT2) or
switch.
disconnected from Analog Input Board. Connect or
replace open sensor.
Chiller will automatically restart when all phases of line
Low AC Line Voltage
voltage increase to the minimum required starting level.
Press STOP/RESET switch and then START
Motor Phase Current Unbalance
switch.
7
