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Start-Up, Operation, and Maintenance Instructions

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G. NORMAL RUN WITH OVERRIDES<br />

PRIMARY<br />

STATE<br />

MESSAGE<br />

120 RUN CAPACITY<br />

LIMITED<br />

121 RUN CAPACITY<br />

LIMITED<br />

122 RUN CAPACITY<br />

LIMITED<br />

123 RUN CAPACITY<br />

LIMITED<br />

124 RUN CAPACITY<br />

LIMITED<br />

125 RUN CAPACITY<br />

LIMITED<br />

Table 11 — CVC/ICVC Primary <strong>and</strong> Secondary Messages <strong>and</strong><br />

Custom Alarm/Alert Messages with Troubleshooting Guides (cont)<br />

*[LIMIT] is shown on the CVC/ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override,<br />

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.<br />

H. OUT-OF-RANGE SENSOR ALARMS<br />

PRIMARY<br />

STATE<br />

MESSAGE<br />

260 SENSOR<br />

FAULT<br />

261 SENSOR<br />

FAULT<br />

262 SENSOR<br />

FAULT<br />

263 SENSOR<br />

FAULT<br />

264 SENSOR<br />

FAULT<br />

265 SENSOR<br />

FAULT<br />

266 SENSOR<br />

FAULT<br />

267 SENSOR<br />

FAULT<br />

268 SENSOR<br />

FAULT<br />

269 SENSOR<br />

FAULT<br />

270 SENSOR<br />

FAULT<br />

271 SENSOR<br />

FAULT<br />

273 SENSOR<br />

FAULT<br />

SECONDARY<br />

ALARM MESSAGE<br />

ADDITIONAL<br />

MESSAGE<br />

PRIMARY CAUSE<br />

CAUSE/REMEDY<br />

HIGH CONDENSER 120->Condenser Pressure Check for high condenser water temperatures.<br />

PRESSURE<br />

[VALUE] exceeded limit of [LIMIT]*. Check setting in SETUP1.<br />

HIGH MOTOR 121->Comp Motor Winding Temp Check motor cooling lines.<br />

TEMPERATURE [VALUE] exceeded limit of [LIMIT]*. Check for closed valves.<br />

Check setting in SETUP1.<br />

LOW EVAP<br />

122->Evaporator Refrig Temp Check refrigerant charge.<br />

REFRIG TEMP [VALUE] exceeded limit of [LIMIT]*. Check for low entering cooler temperatures.<br />

HIGH COMPRESSOR 123->Surge Prevention Override: Check for high condenser water temperatures or<br />

LIFT<br />

Lift Too High For Compressor. low suction temperature.<br />

MANUAL GUIDE 124->Run Capacity Limited: Target guide vane point has been forced in<br />

VANE TARGET Manual Guide Vane Target. MAINSTAT screen. Release force to continue<br />

normal operation.<br />

LOW DISCHARGE No messages. Check oil charge.<br />

SUPERHEAT<br />

Check refrigerant charge.<br />

SECONDARY<br />

ALARM MESSAGE<br />

MESSAGE<br />

PRIMARY CAUSE<br />

LEAVING CHILLED 260->Sensor Fault:<br />

WATER<br />

Leaving Chilled Water<br />

ENTERING CHILLED 261->Sensor Fault:<br />

WATER<br />

Entering Chilled Water<br />

CONDENSER<br />

262->Sensor Fault:<br />

PRESSURE<br />

Condenser Pressure<br />

EVAPORATOR<br />

263->Sensor Fault:<br />

PRESSURE<br />

Evaporator Pressure<br />

COMPRESSOR 264->Sensor Fault:<br />

BEARING TEMP Comp Thrust Bearing Temp<br />

COMPRESSOR 265->Sensor Fault:<br />

MOTOR TEMP<br />

Comp Motor Winding Temp<br />

COMP DISCHARGE 266->Sensor Fault:<br />

TEMP<br />

Comp Discharge Temp<br />

OIL SUMP TEMP 267->Sensor Fault:<br />

Oil Sump Temp<br />

COMP OIL<br />

268->Sensor Fault:<br />

PRESS DIFF<br />

Oil Pump Delta P<br />

CHILLED WATER 269->Sensor Fault:<br />

FLOW<br />

Chilled Water Delta P<br />

COND WATER<br />

270->Sensor Fault:<br />

FLOW<br />

Cond Water Delta P<br />

VFD SPEED SENSOR 271->Sensor Fault:<br />

OUT OF RANGE Check Actual VFD Speed Sensor<br />

VFD SPEED OUT OF 273->Sensor Fault:<br />

RANGE<br />

Check Actual VFD Speed Sensor<br />

80<br />

ADDITIONAL<br />

CAUSE/REMEDY<br />

Check sensor resistance or voltage drop.<br />

Check for proper wiring.<br />

Check sensor resistance or voltage drop.<br />

Check for proper wiring.<br />

Check sensor wiring.<br />

Check sensor wiring.<br />

Check sensor resistance or voltage drop.<br />

Check for proper wiring.<br />

Check sensor resistance or voltage drop.<br />

Check for proper wiring.<br />

Check sensor resistance or voltage drop.<br />

Check for proper wiring.<br />

Check sensor resistance or voltage drop.<br />

Check for proper wiring.<br />

Check sensor wiring <strong>and</strong> accuracy.<br />

Check sensor wiring <strong>and</strong> accuracy.<br />

Check sensor wiring <strong>and</strong> accuracy.<br />

Check voltage input on terminals J6-1 <strong>and</strong> J6-2 on<br />

the ISM module. Check wiring.<br />

Check VFD feedback 0-5 vac. Calibrate VFD<br />

speed reference signal.

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