York R123 - Manual (Page 141)

FORM 160.55-O1 (604)
141
YORK INTERNATIONAL
TABLE 1 – CAUSES OF NOR MAL AND SAFE TY SYS TEM SHUT DOWNS IN AC COR DANCE 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.
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