Kohler Understanding Generator Fault Codes: L1-L2 Low Shutdown and Low Voltage Issues

Page 26

Fault (RDC2)

Fault (OnCuer

Condition

Check

 

Plus)

 

 

 

 

 

 

Over Crank

Over Crank

Three unsuccessful starting attempts.

Check the fuel supply, spark plug,

Shutdwn

 

 

and battery.

 

 

 

Check for loose connections.

 

 

 

Contact an authorized

 

 

 

distributor/dealer for service.

 

 

 

 

PrimLoopOpn

Primary Loop

Ignition coil 1 voltage is below normal or

Check the battery voltage.

Warning

Open

there is an open circuit.

Contact an authorized

 

 

 

 

 

 

distributor/dealer for service and

 

 

 

provide the fault code.

 

 

 

 

PrimLoopSht

Primary Loop

Ignition coil 1 voltage is abnormal.

Check the battery voltage.

Warning

Shorted

 

Contact an authorized

 

 

 

 

 

 

distributor/dealer for service and

 

 

 

provide the fault code.

 

 

 

 

RAM Failure

Ram Failure

An ECM memory error occurred.

Contact an authorized

Warning

 

 

distributor/dealer for service and

 

 

 

provide the fault code.

 

 

 

 

RunRelCoil

Run Relay Coil

Excessive current on the run (70) line.

Check for shorted relays or shorted

Shutdwn

Overload

 

wires.

 

 

 

 

Spd Sens Flt

Speed Sensor

Engine speed sensor has failed or engine

Contact an authorized

Shutdwn

Fault

stalled. ECM is no longer reporting valid

distributor/dealer for service.

 

 

speed.

 

 

 

 

 

Total Power High

Total Power

Measured load is greater than 102% of the

Reduce the load by turning off

Shutdwn

High Shutdown

generator set power rating for more than 1

appliances.

 

 

minute. (30RCLH only)

 

 

 

 

 

Volts L1-L2 High

High Generator

Generator Voltage High. Output voltage

Contact an authorized

Shutdwn

Voltage L1-L2

exceeds 120% of the system nominal voltage

distributor/dealer for service.

 

 

for more than 2 seconds.

 

 

 

 

 

Volts L1-L2 Low

Low Generator

Generator Voltage Low. Output voltage falls

Reduce the load by turning off

Shutdwn

Voltage L1-L2

below 80% of the nominal system voltage for

appliances and restart the generator

 

 

more than 10 seconds.

set.

 

 

 

Contact an authorized

 

 

 

distributor/dealer for service.

 

 

 

 

Volts L2-L3 High

High Generator

Generator Voltage High. Output voltage

Contact an authorized

Shutdwn

Voltage L2-L3

exceeds 120% of the system nominal voltage

distributor/dealer for service.

 

 

for more than 2 seconds.

 

 

 

 

 

Volts L2-L3 Low

Low Generator

Generator Voltage Low. Output voltage falls

Reduce the load by turning off

Shutdwn

Voltage L2-L3

below 80% of the nominal system voltage for

appliances and restart the generator

 

 

more than 10 seconds.

set.

 

 

 

Contact an authorized

 

 

 

distributor/dealer for service.

 

 

 

 

Volts L3-L1 High

High Generator

Generator Voltage High. Output voltage

Contact an authorized

Shutdwn

Voltage L3-L1

exceeds 120% of the system nominal voltage

distributor/dealer for service.

 

 

for more than 2 seconds.

 

 

 

 

 

Volts L3-L1 Low

Low Generator

Generator Voltage Low. Output voltage falls

Reduce the load by turning off

Shutdwn

Voltage L3-L1

below 80% of the nominal system voltage for

appliances and restart the generator

 

 

more than 10 seconds.

set.

 

 

 

Contact an authorized

 

 

 

distributor/dealer for service.

Figure 2-5Controller Fault Messages

26 Section 2 Generator Set Operation

TP-6905 6/14

Image 26
Contents RDC2 TP-6905 6/14Controller Identification Accessory Number Accessory DescriptionProduct Identification Information Generator Set Identification NumbersTable of Contents Appendix a Abbreviations Scheduled MaintenanceTroubleshooting Accidental Starting Safety Precautions and InstructionsBattery Accidental starting Can cause severe injury or deathFuel System Engine Backfire/Flash FireExhaust System Hazardous voltage Will cause severe injury or death Hazardous NoiseHazardous noise Can cause hearing loss Airborne particles Can cause severe injury or blind- nessHot Parts Hot coolant and steam Can cause severe injury or deathIntroduction NameplateList of Related Literature Literature Type Part NumberService Assistance Service Assistance TP-6905 6/14 Service Views Cooling System DetailService Views TP-6905 6/14 Operating Area Prestart ChecklistGenerator Set Operation Keep the generator set area clear. Maintain at leastExercising the Generator Set Generator Set OperationSystem Diagnostics Automatic Operation with Model RDT or RSB Transfer SwitchesUnloaded Cycle Exercise with Complete System Diagnostics ExerciseSetting the Exerciser at Power-up Power Failure During ExerciseExerciser Reset Unloaded Full-Speed ExerciseChanging the Exercise Setting Procedure to Change the Exercise Setting2RDC2 Main Menu 3Procedure to Set the Exerciser Resetting the Controller after a Fault Shutdown FaultsATS Communication Errors Procedure to Reset the Controller after a Fault ShutdownFault RDC2 Fault OnCuer Condition Check Plus ATSECM Air filter 5Controller Fault Messages Setting Model RXT Transfer Switch OperationProcedure to View Event History Event LogATS Control Sequence of Operation Time DelaysATS Load Control Relay Time Delay Normal Source FailsControls and Indicators RDC2 Controller OperationButton Function Controller Keypad LED IndicatorsButton LED OperationLCD Display Active AlertChanging Settings Controller PowerBattery Charging Procedure to Change SettingsChanging Settings on the RDC2 Controller 6Changing SettingsController Menus Main MenuOverview Menu Engine Metering MenuGenerator Metering Menu Voltage CalibrationGenerator Set Information Menu Genset Run Time MenuAdjusting the Display Contrast Voltage Regulator VR Voltage AdjustSetting the Exerciser Genset System MenuATS Status Menu Screens on this page do not appearATS Configuration Menu Changing ATS Configuration SettingsDate and Time Menu Date and Time 02Dec2014 1234pm Time Format 12hr24hrNetworking Information Menus 17Networking Information MenuNetworking Status Submenu DhcpNetworking Configuration Submenu OnCue Plus Password OnCue Plus PasswordRbus Information Submenu 20RBUS Information SubmenuRemote Devices Submenu 21Remote Devices SubmenuProgrammable Interface Module PIM Menus Load Control Menus 23Load Control Status MenuScheduled Maintenance General MaintenanceScheduled Maintenance TP-6905 6/14 Service Schedule Oil Check Oil SpecificationsLubrication System Oil AdditionsStop the generator set. Check the oil level. Add Reset the maintenance timer on the RDC2Replace the oil filter Check for leaksAir Cleaner Air Cleaner Service ProcedureExhaust System Inspection Points Cooling SystemChecking and Filling Coolant Cooling System Inspection Flushing and CleaningFlushing and Cleaning Procedure Draining Cooling SystemIgnition System Model Spark plug gap511 Battery Storage Procedure Introduction TroubleshootingFault Messages USB PortGenerator Set Troubleshooting Problem Possible Cause Corrective ActionController Troubleshooting 2RDC2 Troubleshooting ChartTroubleshooting TP-6905 6/14 Appendix a Abbreviations AnsiLCB Page By Kohler Co. All rights reserved

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