Kohler 24VDC, 6VSG, 36VDC, 48VDC Troubleshooting, Introduction, Fault Messages, Circuit Protection

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Section 5 Troubleshooting

5.1 Introduction

Use the troubleshooting charts in this section to diagnose and correct common problems. First check for simple causes such as a dead engine starting battery, loose connections, or an open circuit breaker. The charts include a list of common problems, possible causes of the problem, and recommended corrective actions.

If the procedures in this manual do not explain how to correct the problem, contact an authorized Kohler distributor/dealer. Maintain a record of repairs and adjustments performed on the equipment. Use the record to help describe the problem and repairs or adjustments made to equipment.

5.2 Fault Messages

The VSC controller displays fault messages to aid in troubleshooting. Selected fault messages and recommended checks are listed in Figure 2-5.

Identify and correct the cause of the fault condition. Then reset the controller after a fault shutdown. See Section 2.6.3.

5.3 Circuit Protection

If the generator set circuit breaker trips repeatedly, contact an authorized Kohler distributor/dealer for service.

5.3.1Controller Internal Circuit Protection

The controller is equipped with internal circuit protection. A fault message, Accy PwrOver Warning or MainPwrOverL Shutdown, is displayed if this internal protection is activated. Press OFF to reset. Contact an authorized Kohler distributor/dealer for service.

5.3.2Line Circuit Breaker

The line circuit breaker interrupts the generator output in the event of a fault in the wiring between the generator and the load. If the circuit breaker trips, reduce the load and switch the breaker back to the ON position.

5.4 Controller Service Access

A USB port is located in the service access area. See Figure 5-1.Some controller settings can be adjusted using a laptop computer with Kohler SiteTech software. Use a USB cable with a mini-B connector to connect the controller to your PC. See TP-6701, SiteTech Software Operation Manual, for more information.

12

KPS_031A

GM77569

1.USB port (mini-B)

2.Not used

Figure 5-1Controller Service Access (cover removed)

TP-6843 1/13

Section 5 Troubleshooting 53

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Contents TP-6843 1/13a VSCController Identification Product Identification InformationGenerator Set Identification Numbers Engine IdentificationTable of Contents Appendix a Abbreviations Table of ContentsScheduled Maintenance Accidental Starting Safety Precautions and InstructionsBattery Exhaust System Engine Backfire/Flash FireFuel System Hazardous Noise Use extreme care when handling, storing, and using fuelsHot Parts Heavy EquipmentList of Related Literature IntroductionEmission Information NameplateService Assistance Service Assistance TP-6843 1/13 Introduction Engine Descriptions and Service ViewsGenerator Set Enclosure AlternatorCarburetor Heater AccessoriesOnCue Generator Management System Programmable Interface Module PIMService Views 3Optional Communications Kit Components Theory of Operation Prestart ChecklistGenerator Set Operation Generator Set Operation Exercising the Generator SetShutdowns FaultsExercise Fault Message ShutdownSD Condition Check Resetting the Controller After a Fault Shutdown5Controller Fault Messages Generator Set Operation TP-6843 1/13 VSC Generator Set Controller Control and IndicatorsVSC Controller Operation Controller Keypad LED IndicatorsLCD Display 6Autopaging Displays, Automatic ModeBattery Charging Controller PowerChanging Settings Procedure to Change Settings7Changing Settings Setting the Exerciser at Controller Power-up Setting the ExerciserChanging the Exercise Settings Procedure to Set the Exerciser8Procedure to Set the Exerciser on the VSC Controller Main Menu VSC Controller MenusEngine Metering Menu Overview MenuCalibration Generator Metering MenuGenset Run Time Menu Generator Set Information MenuGenset System Menu System Parameters for Battery Bank ChargingNominal Voltage 24V 36V 48V System Voltage, VDC Adjusting the Display Contrast Setting the ExerciserNetworking Information Menus Date and Time MenuDhcp Networking Status SubmenuPassword Networking Configuration Submenu OnCue PasswordRbus Rbus Information25Remote Devices Submenu Remote Devices SubmenuProgrammable Interface Module PIM Status Menu Event Log Procedure to View Event HistoryVSC Controller Operation TP-6843 1/13 Scheduled Maintenance Scheduled MaintenanceFuel Service Schedule, 6VSG ModelsLubrication System Oil Change ProcedureLow Oil Pressure Shutdown Oil CheckSpark Plugs Resetting the Maintenance TimerPaper Element Service Air Cleaner ServicePrecleaner Service Cooling System Engine Starting BatteryLubricating System Storage ProcedureFuel System Cylinder LubricationBattery Fault Messages TroubleshootingController Service Access IntroductionProblem Possible Cause Recommended Action TroubleshootingAbdc Appendix a AbbreviationsSysteme international d’unites TP-6843 1/13 Appendix Appendix TP-6843 1/13 Page 2012, 2013 by Kohler Co. All rights reserved