Sterling 30RA010-055 Fault Codes, •P50: FAULT HISTORY — Last 8 faults, •P51: SOFTWARE version

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Table 37 — Fault Codes

FAULT CODE

DESCRIPTION

SOLUTION

AF

High Temperature Fault: Ambient temperature is too high;

Check cooling fan operation

 

Cooling fan has failed (if equipped).

 

CF

Control Fault: A blank EPM, or an EPM with corrupted data

Perform a factory reset using Parameter 48 —

 

has been installed.

PROGRAM SELECTION.

cF

Incompatibility Fault: An EPM with an incompatible parame-

Either remove the EPM or perform a factory

 

ter version has been installed.

reset (Parameter 48) to change the parameter

 

 

version of the EPM to match the parameter

 

 

version of the drive.

CL

CURRENT LIMIT: The output current has exceeded the

Check for loose electrical connections.

 

CURRENT LIMIT setting (Parameter 25) and the drive is

Check for faulty condenser fan motor.

 

reducing the output frequency to reduce the output current.

Check Parameter P25 from Table 38 is set cor-

 

If the drive remains in CURRENT LIMIT too long, it can trip

rectly.

 

into a CURRENT OVERLOAD fault (PF).

 

GF

Data Fault: User data and OEM defaults in the EPM are

Restore factory defaults P48, see section

 

corrupted.

above. If that does not work, replace EPM.

HF

High DC Bus Voltage Fault: Line voltage is too high; Decel-

Check line voltage — set P01 appropriately

 

eration rate is too fast; Overhauling load.

 

JF

Serial Fault: The watchdog timer has timed out, indicating

Check serial connection (computer)

 

that the serial link has been lost.

Check settings for PXX.

 

 

Check settings in communication software to

 

 

match PXX.

LF

Low DC Bus Voltage Fault: Line voltage is too low.

Check line voltage — set P01 appropriately

OF

Output Transistor Fault: Phase to phase or phase to ground

Reduce boost or increase acceleration values.

 

short circuit on the output; Failed output transistor; Boost

If unsuccessful, replace drive.

 

settings are too high; Acceleration rate is too fast.

 

PF

Current Overload Fault: VFD is undersized for the applica-

Check line voltage — set P01 appropriately

 

tion; Mechanical problem with the driven equipment.

Check for dirty coils

 

 

Check for motor bearing failure

SF

Single-phase Fault: Single-phase input power has been

Check input power phasing

 

applied to a three-phase drive.

 

F1

EPM Fault: The EPM is missing or damaged.

 

F2-F9, Fo

Internal Faults: The control board has sensed a problem

Consult factory

Drive display = 60.0 even though it

Feedback signal is above set point

Check for proper set point

is cold outside and it should be run-

 

Check liquid line pressure

ning slower

 

 

Drive display = ‘---’ even though

Start jumper is missing

Replace start jumper. See section above

drive should be running

 

 

Drive display = 8.0 even though fan

Feedback signal is below set point and fan is at minimum

Check for proper set point

should be running faster

speed

Check liquid line pressure

VFD flashes 57 and LCS

Feedback or speed signal lost. Drive will operate at 57 Hz

In stand alone mode: Check transducer wiring

 

until reset or loss of start command. Resetting requires

and feedback voltage. Feedback voltage dis-

 

cycling start command (or power).

played on P-69. Pin 6 should be 5 v output.

 

 

Pin 5 (feedback) should be somewhere

 

 

between 0 and 5 v.

Manual Reset — If fault condition has been removed, cycle power to the chiller to reset the VFD.

Troubleshooting — Troubleshooting the Motormaster® V control requires a combination of observing system operation and VFD information. The drive provides 2 kinds of trouble- shooting modes: a status matrix using the 3-digit display (P57, P58) and real time monitoring of key inputs and outputs. The collective group is displayed through parameters 50-60 and all values are read-only.

•P50: FAULT HISTORY — Last 8 faults

•P51: SOFTWARE version

•P52: DC BUS VOLTAGE — in percent of nominal. Usually rated input voltage x 1.4

•P53: MOTOR VOLAGE — in percent of rated output voltage

•P54: LOAD — in percent of drives rated output current rating

•P55: VDC INPUT — in percent of maximum input: 100 will indicate full scale which is 5 v

•P56 4-20 mA INPUT — in percent of maximum input. 20% = 4 mA, 100% = 20 mA

Manual Starter Trip — If the VFD manual starter (MS-FC- HS, MS-FC-A1 or MS-FC-B1 depending on model) trips, locate the inrush current protectors (3 round black disks per motor) and verify their resistance. For units operating at 208 v or 230 v, these devices should measure approximately 7 ohms. For all other voltages, they should measure approximately 20 ohms. Check value with mating plug disconnected, power to chiller off and at ambient temperature (not hot immediately after stopping VFD). These are standard resistances at 77 F (25 C). Resistance values decrease at higher temperatures and increase at lower temperatures.

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Contents SAFETY CONSIDERATIONS GENERAL CONTENTSTable 1 — Unit Sizes MAJOR SYSTEM COMPONENTSControl Module Communication Sterlco Comfort Network SCN Interface —Table 4 - Output Relays Table 3 — Status SwitchesTable 5 - SCN Communication Bus Wiring Table 2 — Thermistor DesignationsLEGEND FOR FIG. Page Page 30RA010-018AQUA SNAP Fig. 3 — Wiring Schematic 30RA010-018SEE NOTE SEE NOTE AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATICFig. 3 - Wiring Schematic 30RA010-018cont 30RA022-030AQUA SNAP Fig. 4 - Wiring Schematic 30RA022-030AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATIC Fig. 4 - Wiring Schematic 30RA022-030cont30RA032-040AQUA SNAP Fig. 5 — Wiring Schematic 30RA032-040AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATIC Fig. 5 — Wiring Schematic 30RA032-040cont30RA042-055AQUA SNAP Fig. 6 — Wiring Schematic 30RA042-055AQUA-SNAPLOW VOLTAGE CONTROL SCHEMATIC Fig. 6 — Wiring Schematic 30RA042-055contMODE Fig. 7 — Main Base BoardESCAPEENTER REMOTE CONTACT SW1 OFF ENABLE OFF SW2 ONFig. 9 — Typical Space Temperature Sensor Wiring CEPL130351 Fig. 11 - Energy Management Module100/100 Fig. 12 — Deadband Multiplier Fig. 14 — 30RA Condenser Fan Sequence Fig. 13 — Operating Envelope forR-22Maneurop Compressor Cooling Set Point Select Fig. 16 — Scrolling Marquee Display Service Test See Table 11 — Both main powerand control circuit power must be on Table 8 — Control Methods and Cooling Set PointsOptional Factory-InstalledHydronic Package — •Cooler Pump Control CPC Configuration, OPT1 ON Table 9 — Marquee Display Menu Structure Fig. 17 — Dual Chiller Thermistor LocationTable 10 — Run Status Mode and Sub-ModeDirectory SUB-MODE Table 12 - Temperature Mode and Sub-ModeDirectory Table 15 — Inputs Mode and Sub-ModeDirectory Table 13 — Pressure Mode and Sub-ModeDirectoryTable 14 — Set Point and Sub-ModeDirectory DISPLAY Table 16 — Outputs Mode and Sub-ModeDirectorySUB-MODE KEYPADDISPLAY SUB-MODEKEYPAD ITEMDISPLAY SUB-MODEKEYPAD ITEMTable 18 — Time Clock Mode and Sub-ModeDirectory PER.3 SUB-MODE Table 19 — Operating Mode and Sub-ModeDirectory Table 20 — Alarms Mode and Sub-ModeDirectoryDISPLAY SUB-MODEITEM KEYPAD ENTRYRSET DISP Table 23 — Operating Modes Table 25A — 4-20mA Reset Table 24 — Example of Reading and Clearing AlarmsTable 26B — Configuring Return Temperature Reset Fig. 20 — Space Temperature Reset Fig. 18 — Standard Chilled FluidTemperature Control — No Reset Fig. 19 — Outdoor-AirTemperature ResetFig. 21B — Cooling Set Point 4 to 20 mA Fig. 21A — 4- to 20-mADemand LimitingTable 27 — Configuring Demand Limit TROUBLESHOOTINGand fluid tubing Table 28 — TroubleshootingRecommended that system be filled with an appro FU — Fuse GND — Ground Fig. 22 — Component Arrangement — 30RA010-030FU — Fuse GND — Ground Fig. 23 — Component Arrangement — 30RA032-040FU — Fuse GND — Ground Fig. 24 — Component Arrangement — 30RA042-055NOTES LEGEND Table 29 — Alarm and Alert Codes Table 29 - Alarm and Alert Codes cont ALARM Table 29 — Alarm and Alert Codes contALARM Table 29 — Alarm and Alert Codes contALARM Table 29 — Alarm and Alert Codes contElectronic Components SERVICECompressor Replacement Refer to Fig Table 30 - Unit Torque SpecificationFig. 30 — Compressor Location — 30RA032-055 Fig. 28 — Compressor WiringFig. 27 — Typical Compressor Mounting — All Sizes Fig. 29 — Compressor Location — 30RA010-030Table 31 - Oil Charge Condenser Section and CoilsFig. 33 — Condenser-FanPosition Standard Fan Fig. 31 — 30RA Access PanelsCheck Refrigerant Feed Components Fig. 32 — Condenser-FanMountingCheck Unit Safeties Table 32 — Factory Settings, High-PressureSwitch Fixed Compressor and Unit Protective DevicesCOOLER FREEZE-UPPROTECTION TEMP TEMP For Thermistor T10 For Thermistor T10 Fig. 36 — Thermistor Connections to Main Base Board, J8 ConnectorFig. 35 — Fluid-SideTemperature Sensors T1 and T2 PROGRAMMING Mode •P51: SOFTWARE version Table 37 - Fault Codes•P50: FAULT HISTORY — Last 8 faults PARAMETERS Table 39 — Replacement Modules System Check MAINTENANCEMinimum Loop Volume PRE-START-UPOperating Limitations Standard 30RA Units OPERATION SEQUENCETable 41 — Temperature Limits for CIRCA_AN Circuit A Analog Parameters APPENDIX ASCN Tables A_UNIT General Unit Parameters CIRCADIO Circuit A Discrete Inputs/OutputsOPTIONS Unit Parameters CIRCBDIO Circuit B Discrete Inputs/OutputsCIRCB_AN Circuit B Analog Parameters BRODEFS Broadcast POC Definition Table ALARMDEF Alarm Definition TableDISPLAY Marquee Display SETUP DUALCHIL Dual Chiller Configuration SettingsOPTIONS2 Options 2 Configuration OPTIONS1 Options 1 ConfigurationSETPOINT SCHEDOVR Timed Override SetupRESETCON Temperature Reset and Demand Limit MAINTENANCE ALARMS: Maintenance DisplayUNIT DUALCHIL: Maintenance Display CURRMODS: Maintenance DisplayLOADFACT: Maintenance Display LEARNFNS Maintenance DisplayPM-STRN Maintenance Display PM-COIL:Maintenance DisplayPM-PUMP:Maintenance Display RUNTEST: Maintenance Display VERSIONS: Maintenance Display STRTHOUR Maintenance DisplayTESTMODE: Maintenance Display WSMDEFME: Maintenance Display AND MANUAL STARTERS FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMPAPPENDIX B FACTORY SETTINGS FOR COMPRESSOR, FAN, PUMP AND MANUAL STARTERS contDataPort, DataLink, BAClink Object Definition APPENDIX CSETPOINT OPTIONSDesign Information START-UPCHECKLIST FOR 30RA LIQUID CHILLERRemove and use for Job File I.Project Information II. Preliminary Equipment CheckStart and Operate Machine. Complete the Following III. Unit Start-UpCL-3 CL-4 Record Software Versions MODE — RUN STATUSCOMMENTS III.Unit Start-Upcont UNIT Configuration SettingsOPTIONS1 Options Configuration CL-6 OPTIONS2 Options ConfigurationRSET Reset Configuration Settings III.Unit Start-UpcontCL-7 SLCT Setpoint and Ramp Load ConfigurationIII.Unit Start-Upcont SETPOINTIII.Unit Start-Upcont Service Test Mode and Sub-ModeDirectory
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