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Table 11 — CVC Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides (cont) G. NORMAL RUN WITH OVERRIDES STATE 120 Check for high condenser water temperatures. Check setting in SETUP1. 121 Check motor cooling lines. Check for closed valves. Check setting in SETUP1. 122 Check refrigerant charge. Check for low entering cooler temperatures. 123 Check for high condenser water temperatures or low suction temperature. 124 Target guide vane point has been forced in MAINSTAT screen. Release force to continue normal operation. 125 Check oil charge. Check refrigerant charge. *[LIMIT] is shown on the CVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or alarm condition. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control has recorded at the time of the fault condition. PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE PRIMARY CAUSE RUN CAPACITY LIMITED HIGH CONDENSER PRESSURE 120->Condenser Pressure [VALUE] exceeded limit of [LIMIT]*. RUN CAPACITY LIMITED HIGH MOTOR TEMPERATURE 121->Comp Motor Winding Temp [VALUE] exceeded limit of [LIMIT]*. RUN CAPACITY LIMITED LOW EVAP REFRIG TEMP 122->Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*. RUN CAPACITY LIMITED HIGH COMPRESSOR LIFT 123->Surge Prevention Override: Lift Too High For Compressor. RUN CAPACITY LIMITED MANUAL GUIDE VANE TARGET 124->Run Capacity Limited: Manual Guide Vane Target. RUN CAPACITY LIMITED LOW DISCHARGE SUPERHEAT No messages. ADDITIONAL CAUSE/REMEDY H. OUT-OF-RANGE SENSOR ALARMS STATE 260 261 262 263 264 265 266 267 268 269 270 271 273 ADDITIONAL CAUSE/REMEDY Check sensor resistance or voltage Check for proper wiring. Check sensor resistance or voltage Check for proper wiring. Check sensor wiring. Check sensor wiring. Check sensor resistance or voltage Check for proper wiring. Check sensor resistance or voltage Check for proper wiring. Check sensor resistance or voltage Check for proper wiring. Check sensor resistance or voltage Check for proper wiring. Check sensor wiring and accuracy. Check sensor wiring and accuracy. Check sensor wiring and accuracy. drop. drop. drop. drop. drop. drop. PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE PRIMARY CAUSE SENSOR FAULT LEAVING CHILLED WATER 260->Sensor Fault: Leaving Chilled Water SENSOR FAULT ENTERING CHILLED WATER 261->Sensor Fault: Entering Chilled Water SENSOR FAULT CONDENSER PRESSURE 262->Sensor Fault: Condenser Pressure SENSOR FAULT EVAPORATOR PRESSURE 263->Sensor Fault: Evaporator Pressure SENSOR FAULT COMPRESSOR BEARING TEMP 264->Sensor Fault: Comp Thrust Bearing Temp SENSOR FAULT COMPRESSOR MOTOR TEMP 265->Sensor Fault: Comp Motor Winding Temp SENSOR FAULT COMP DISCHARGE TEMP 266->Sensor Fault: Comp Discharge Temp SENSOR FAULT OIL SUMP TEMP 267->Sensor Fault: Oil Sump Temp SENSOR FAULT COMP OIL PRESS DIFF 268->Sensor Fault: Oil Pump Delta P SENSOR FAULT CHILLED WATER FLOW 269->Sensor Fault: Chilled Water Delta P SENSOR FAULT COND WATER FLOW 270->Sensor Fault: Cond Water Delta P SENSOR FAULT VFD SPEED SENSOR OUT OF RANGE 271->Sensor Fault: Check Actual VFD Speed Sensor SENSOR FAULT VFD SPEED OUT OF RANGE 273->Sensor Fault: Check Actual VFD Speed Sensor Check voltage input on terminals J6-1 and J6-2 on the ISM module. Check wiring. Check VFD feedback 0-5 vac. Calibrate VFD speed reference signal. 80PDF Image | 19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a
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