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Table 11 — CVC Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides (cont) I. CHILLER PROTECT LIMIT FAULTS (cont) STATE 246 Check diffuser/guide vane schedule. 247 Check rotating stall transducer wiring and accuracy. PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE PRIMARY CAUSE PROTECTIVE LIMIT INVALID DIFFUSER CONFIG 246->Diffuser Control Invalid Configuration: Check SETUP2 Entries. PROTECTIVE LIMIT DIFFUSER POSITION FAULT 247->Diffuser Position Fault: Check Guide Vane and Diffuser Actuators PROTECTIVE LIMIT SPARE TEMPERATURE #1 248->Spare Temperature #1 [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT SPARE TEMPERATURE #2 249->Spare Temperature #2 [VALUE] exceeded limit of [LIMIT]*. PROTECTIVE LIMIT REFRIGERANT LEAK SENSOR 250->Refrigerant Leak Sensor [VALUE] exceeded Limit of [LIMIT]*. PROTECTIVE LIMIT ISM CONFIG CONFLICT 251->ISM Config Conflict (ISM Uploaded); Verify to Reset Alarm PROTECTIVE LIMIT ISM CONFIG CONFLICT 252->ISM Config Conflict (ISM Downloaded); Verify to Reset Alarm PROTECTIVE LIMIT GUIDE VANE CALIBRATION 253->Guide Vane Fault [VALUE]. Check Calibration. ADDITIONAL CAUSE/REMEDY Check diffuser schedule. Check for proper operation of diffuser actua- tor and inlet guide vane actuator. Check diffuser coupling. Check inlet guide vane operation. Check inlet guide vane calibration. Check diffuser/inlet guide vane schedule. Check diffuser mechanical set-up for proper orientation. If not using variable diffuser, check that the option has not been enabled. 248 249 250 The refrigerant leak detector’s output wired to J5-5 and J5-6 on the CCM module has reached the alarm limit. Check leak detector and for leaks. 251 Confirm valid settings in ISM_CONF screen. 252 Confirm valid settings in ISM_CONF screen. 253 Enter Control Test and execute Guide Vane Calibration. Check guide vane feedback (terminals J4-9 and J4-10) on the CCM module. *[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 tripped. J. CHILLER ALERTS STATE 140 141 142 143 144 145 146 147 148 ADDITIONAL CAUSE/REMEDY Check sensor resistance or voltage drop. Check for proper wiring. Check sensor resistance or voltage drop. Check for proper wiring. Check for partially or closed shut-off valves. Check oil filter. Check oil pump and power supply. Check oil level. Check for foaming oil at start-up. Check transducer wiring and accuracy. Power loss has been detected in any phase. Chiller automatically restarting. A drop in line voltage has been detected within 2 voltage cycles. Chiller automatically restarting if Autorestart option is enabled. Check line power. Check line power. ISM has detected a hardware fault and has reset. Chiller automatically restarting. Check control power. PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE PRIMARY CAUSE SENSOR ALERT LEAVING COND WATER TEMP 140->Sensor Fault: Check Leaving Cond Water Sensor SENSOR ALERT ENTERING COND WATER TEMP 141->Sensor Fault: Check Entering Cond Water Sensor LOW OIL PRESSURE ALERT CHECK OIL FILTER 142->Low Oil Pressure Alert. Check Oil Filter. AUTORESTART PENDING LINE PHASE LOSS 143->Line Phase Loss AUTORESTART PENDING LINE VOLTAGE DROP OUT 144->Single Cycle Line Voltage Dropout AUTORESTART PENDING HIGH LINE VOLTAGE 145>Line Overvoltage — Average Line Volt [VALUE] AUTORESTART PENDING LOW LINE VOLTAGE 146->Line Undervoltage — Average Line Volt [VALUE] AUTORESTART PENDING STARTER MODULE RESET 147->Starter Module Power- On Reset When Running AUTORESTART PENDING POWER LOSS 148->Control Power-Loss When Running 83PDF Image | 19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a
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