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I. CHILLER PROTECT LIMIT FAULTS (cont) STATE 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 ADDITIONAL CAUSE/REMEDY Check transducer wiring and accuracy. Check power supply to pump. Check pump operation. Check transducer calibration. Check transducer wiring and accuracy. Check power supply to pump. Check pump operation. Check oil level. Check for partially closed service valves. Check oil filters. Check for foaming oil at start-up. Check transducer calibration. Perform pump control test. Check transducer accuracy and wiring. Check water valves. Check transducer calibration. Perform pump control test. Check transducer accuracy and wiring. Check water valves. Check transducer calibration. Check sensor resistance or voltage drop. Check for proper wiring. Check for proper condenser flow and temperature. Check for proper inlet guide vane and diffuser actuator operation. Check for fouled tubes or noncondensables in the system. Check for proper refrigerant charge. Check float operation. Check for proper fluid flow and temperature. Check for proper inlet guide vane operation. Check motor sensors wiring and accuracy. Check motor cooling line for proper operation, or restrictions. Check for excessive starts within a short time span. Check oil heater for proper operation. Check for low oil level, partially closed oil supply valves, clogged oil filters, etc. Check the sensor wiring and accuracy. Check for high condenser water temperatures, low water flow, fouled tubes. Check for division plate/gasket bypass. Check for noncondensables. Check transducer wiring and accuracy. CCN has signaled the chiller to stop. Reset and restart when ready. If the signal was sent by the CVC, release the stop signal on the STATUS01 table. Spare safety input has tripped or factory installed jumper is not present. Check condenser flow and temperatures. Check surge protection configuration. Check wiring to ISM. Check wiring to CCM. Check for proper refrigerant charge. Check float operation. Check for proper fluid flow and temperature. Check for proper inlet guide vane operation. Table 11 — CVC Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides (cont) PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE PRIMARY CAUSE PROTECTIVE LIMIT OIL PRESS SENSOR FAULT 227->Oil Pump Delta P [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT LOW OIL PRESSURE 228->Oil Pump Delta P [VALUE] exceeded limit of [LIMIT].* PROTECTIVE LIMIT LOW CHILLED WATER FLOW 229->Low Chilled Water Flow; Check Delta P Config & Calibration PROTECTIVE LIMIT LOW CONDENSER WATER FLOW 230->Low Condenser Water Flow; Check Delta P Config & Calibration PROTECTIVE LIMIT HIGH DISCHARGE TEMP 231->Comp Discharge Temp [VALUE] exceeded limit of [LIMIT].* PROTECTIVE LIMIT LOW REFRIGERANT TEMP 232->Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT HIGH MOTOR TEMPERATURE 233->Comp Motor Winding Temp [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT HIGH BEARING TEMPERATURE 234->Comp Thrust Bearing Temp [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT HIGH CONDENSER PRESSURE 235->Condenser Pressure [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT CCN OVERRIDE STOP 236->CCN Override Stop while in LOCAL run mode PROTECTIVE LIMIT SPARE SAFETY DEVICE 237->Spare Safety Device PROTECTIVE LIMIT EXCESSIVE COMPR SURGE 238->Compressor Surge: Check condenser water temp and flow PROTECTIVE LIMIT TRANSDUCER VOLTAGE FAULT 239->Transducer Voltage Ref [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT LOW DISCHARGE SUPERHEAT 240->Check for Oil in Refrigerant or Overcharge of Refrigerant LOSS OF COMMUNICATION WITH STARTER MODULE 241->Loss of Communica- tion With Starter. LOSS OF COMMUNICATION WITH CCM MODULE 242->Loss of Communica- tion With CCM. POTENTIAL FREEZE-UP EVAP PRESS/TEMP TOO LOW 243->Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*. POTENTIAL FREEZE-UP COND PRESS/TEMP TOO LOW 244->Condenser Refrig Temp [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT VFD SPEED OUT OF RANGE 245->Actual VFD Speed [VALUE] exceeded limit of [LIMIT]*. 82PDF Image | 19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a
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