Carrier 19XRV Start-up, Operation And Maintenance Instructions Manual

Also see for AquaEdge 19XRV series: Start-up, operation and maintenance instructions Start-up and service instructions Installation instructions Start-up, operation and maintenance instructions Start-up and service instructions

Contents

6Table 10 - Alarm and alert messages (continued)I. CHILLER PROTECTIVE LIMIT FAULTS (continued)ICVCFAULTSTATEPRIMARY MESSAGE SECONDARYMESSAGEALARM MESSAGE PRIMARYCAUSEADDITIONAL CAUSE/REMEDY243 POTENTIAL FREEZE-UPEVAP PRESS/TEMPTOO LOW243->Evaporator Refrig Temp[VALUE] exceeded limit of [LIMIT]*.Check for proper refrigerant charge.Check float valve operation.Check for proper fluid flow and temperature.Confirm that condenser water enters bottom row of condenser tubes first.Check Evaporator Refrigerant Temperature sensor.Check for division plate gasket bypass.Check for fouled tubes.244 POTENTIAL FREEZE-UPCOND PRESS/TEMPTOO LOW244->Condenser Refrig Temp[VALUE] exceeded limit of [LIMIT]*.Condenser water too cold or chiller shut down with brine below 0°C incooler so equalization temperature in chiller approached 0°C.Check condenser pressure transducer.Check refrigerant charge.245 PROTECTIVE LIMIT HIGH VFD SPEED 245->Actual VFD Speed exceededlimit of Target VFD Speed ± 10%]*.Actual VFD Speed on COMPRESS screen must not exceed Target VFDSpeed by more than 10%.246 PROTECTIVE LIMIT INVALID DIFUSERCONFIG.246->Diffuser Control Invalid Con-figuration: Check SETUP2 EntriesCheck 25%, 50%, and 75% Guide Vane and Diffuser Load Point entriesin SETUP2 screen.247 PROTECTIVE LIMIT DIFFUSERPOSITION FAULT247->Diffuser Position Fault: CheckGuide Vane/Diffuser ActuatorsConfirm that Diffuser Option in SETUP 2 screen has not been Enabled ifcompressor does not have a split ring diffuser. May indicate rotating stallcondition.Check rotating stall transducer wiring, accuracy and sealing.Check diffuser schedule and guide vane schedule in SETUP2 screen.Check for proper operation of diffuser and inlet guide vane actuatorsincluding inlet guide vane calibration.Check diffuser actuator coupling for rotational slip.Check RC snubber on CCM J4-23 and J4-24.Check 4.3 kOhm resistor between CCM terminals J3-7 and J3-8.Check for electrical noise in CCM Diffuser Pressure wiring. Do not continueto operate compressor except for diagnostic purposes.248 PROTECTIVE LIMIT SPARETEMPERATURE #1248->Spare Temperature #1[VALUE] exceeded limit of [LIMIT]*.Check Spare Temperature Enable and Spare Temperature Limit inSETUP1 Screen.249 PROTECTIVE LIMIT SPARETEMPERATURE #2249->Spare Temperature #2[VALUE] exceeded limit of [LIMIT]*.Check component that SPARE TEMPERATURE #2 is Check SpareTemperature Enable and Spare Temperature Limit in SETUP1 Screen.250 UNUSED UNUSED 250->Unused state251 PROTECTIVE LIMIT VFD CONFIGCONFLICT251->VFD Config Conflict (VFDUploaded); Verify to Reset Alarm.The VFD_CONF table in the Gateway does not match that which is in theICVC. This is a normal fault if an ICVC has been uploaded with softwarewhen it was not attached to the CCM. Enter VFD_CONF screen andthen exit VFD_CONF screen by pressing EXIT then CANCEL. Re-enterthe VFD_CONF screen, press EXIT then SAVE. Parameters stored inthe Gateway will be uploaded into the ICVC. Confirm valid settings inVFD_CONF screen.252 PROTECTIVE LIMIT VFD CONFIGCONFLICT252->VFD Config Conflict (VFDDownloaded); Verify to Reset Alarm.The VFD_CONF table in the Gateway does not match that which is inthe ICVC.253 PROTECTIVE LIMIT GUIDE VANECALIBRATION253->Guide Vane Fault [VALUE].Check CalibrationEnter CONTROL TEST and execute Guide Vane Calibration.Check CCM guide vane feedback terminals J4-9 and J4-10.Check guide vane feedback potentiometer. Alarm before start indicatesguide vane opening is not less than 4%. Alarm running indicates guidevane position is < -1% or > 103%, or feedback voltage is < 0.045 or> 3.15 V d.c.254 PROTECTIVE LIMIT VFD CHECKSUMERROR254->Checksum Error: Press Resetto Restore ConfigurationActual VFD checksum does not match calculated value.255 PROTECTIVE LIMIT VFD DEWPREVENTION255->VFD Dew Prevention - VFDCoolant too Cold, Check Solenoidand Cond TVFD COLDPLATE TEMP is too close to dew point based on VFDENCLOSURE TEMP and RELA¬TIVE HUMIDITY in POWER screen.Check for moisture in VFD enclosure.Check Humidity Sensor in CONTROLS TEST.Check for contamination on CCM J3-7 and J3-9 Humidity Sensor.Check that VFD refrigerant cooling modulating valve is closing.256 PROTECTIVE LIMIT INDUCTOROVERTEMP256->Inductor Overtemp Trip - CheckTemp Switch and Cooling FansCheck for cooling fan air flow obstructions.257 PROTECTIVE LIMIT VFD START INHIBIT 257->VFD Start Inhibit: Check VFDDiagnostic Parameters 212/214.The VFD Start Inhibit is derived from the Alarm bit being set in the VFD.The conditions causing the alarm must be corrected in the VFD toenable subsequent starts and operation. See VFD parameters 212/214.258 UNUSED STATE UNUSED 258->Unused259 PROTECTIVE LIMIT CCN OVERRIDESTOP259->CCN Emergency/OverrideStop.CCN has signaled the chiller to stop.This fault must be manually resetfrom the default screen of the ICVC.282 PROTECTIVE LIMIT INVALID VFDCONFIG282->Line Frequency [VALUE]Exceeded Configuration Range.LINE FREQUENCY in POWER screen must be maintained between 45-52 Hz if LINE FREQ=60Hz? is set to NO (50 Hz). LINE FREQUENCYmust be maintained between 55-62 Hz if LINE FREQ=60Hz? is set toYES (60 Hz).Check 2C AUX/HPR Gate Kill circuit.283 PROTECTIVE LIMIT INVALID VFDCONFIG283->Compressor 100%Speed Config Ranges: 50=Hz45-52; 60 Hz=55-62.COMPRESSOR 100% SPEED in VFD_CONF screen must be setbetween 45-52 Hz if LINE FREQ=60Hz? is set to NO (50 Hz).COMPRESSOR 100% SPEED must be set between55-62 Hz if LINE FREQ=60Hz? is set to YES (60 Hz).284 VFD GATEWAY COMPATIBILITYCONFLICT284->VFD Gateway Compatibil¬ityConflict: Check VFG/VFD Versions.VFD Gateway and VFD software versions are not compatible.Call Carrier Service.285 VFD GATEWAY COMPATIBILITYCONFLICT285->VFD Gateway Compatibil¬ityConflict: Check VFG/ICVC Versions.VFD Gateway and ICVC software versions are not compatible.Call Carrier Service.286 PROTECTIVE LIMIT INVERTEROVERCURRENT286->Inverter Overcurrent Fault:Check VFD Status.Check for high entering water temperature or low condenser water flow.Check current settings in VFD_CONF screen.* [LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., setpoint 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.