Kohler Comprehensive Troubleshooting Guide for 12RESV and 8RESV Systems

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Section 6 Troubleshooting

6.1 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.

6.2 USB Port

A USB port is located on the front of the controller. See Figure 1-2 for location. Use a USB cable with a mini-B connector to connect the controller to your personal computer (laptop).

Some controller settings can be adjusted using a laptop computer with Kohlerr SiteTecht software. SiteTech software is available to Kohler authorized distributors and dealers. See TP-6701, SiteTecht Software Operation Manual, for more information.

6.3 Fault Messages

The RDC2/DC2 controller displays fault messages to aid in troubleshooting. Selected fault messages and recommended checks are listed in Figure 2-3.

Identify and correct the cause of the fault condition. Then reset the controller after a fault shutdown. See Section 2.5.4.

6.4 Circuit Protection

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

6.4.1Controller 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.

6.4.2Line 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.

6.4.3Auxiliary Winding Circuit Breaker

A resettable circuit breaker protects the alternator. The circuit breaker is located in the junction box area. See Figure 1-2.

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Contents TP-6880 10/14a RDC2Controller Identification Accessory Number Accessory DescriptionProduct Identification Information Generator Set Identification NumbersTable of Contents DC2 Controller Operation Scheduled MaintenanceTroubleshooting Accidental starting Can cause severe injury or death Safety Precautions and InstructionsBattery Accidental StartingFire Can cause severe injury or death Engine Backfire/Flash FireExhaust System Carbon monoxide Can CauseHazardous voltage Will cause severe injury or death Fuel System Hazardous NoiseHot Parts Heavy EquipmentList of Related Literature Transfer Switch LiteratureAccessory Literature IntroductionEmission Compliance Period NameplateEmission Information Generator Set ApplicationService Assistance Service Assistance TP-6880 10/14 Descriptions and Service Views RDC2 Controller Features DC2 Controller Features Load Control Module LCM AccessoriesCarburetor Heater Programmable Interface Module PIM1214 Service Views3Service View Generator Set Operation Prestart ChecklistGenerator Set Operation TP-6880 10/14 Generator Set Operation Exercising the Generator SetExercise Automatic Operation with Other Transfer SwitchesSetting the Exerciser Unloaded Cycle Exercise with Complete System DiagnosticsLoaded Full-Speed Exercise with RXT only Power Failure During Exercise CycleSystem Diagnostics Unloaded Full-Speed ExerciseShutdowns FaultsATS Communication Errors Resetting the Controller after a Fault ShutdownFault Message Shutdown SD Condition Check Fault Shutdown SD Condition Check 3Controller Fault MessagesGenerator Enclosure Thermostat Generator Set Operation TP-6880 10/14 RDC2 Controller Operation RDC2 Generator Set/ Transfer Switch ControllerControls and Indicators LED Operation Controller Keypad LED IndicatorsButton Button FunctionActive Alert LCD DisplayProcedure to Change Settings Controller PowerBattery Charging Changing Settings7Changing Settings Changing Settings on the RDC2 ControllerProcedure to Set the Exerciser Setting the ExerciserSetting the Exerciser at Controller Power-up Changing the Exercise Settings8Procedure to Set the Exerciser on the RDC2 Controller Main Menu RDC2 Controller MenusEngine Metering Menu Overview MenuVoltage Calibration Generator Metering MenuGenset Run Time Menu Generator Set Information MenuVoltage Regulator VR Voltage Adj Setting the ExerciserAdjusting the Display Contrast Genset System MenuScreens on this page do not appear ATS Status MenuChanging ATS Configuration Settings ATS Configuration MenuNetworking Information Menus Date and Time MenuDhcp Networking Status SubmenuDhcp Submenu Networking Configuration Submenu OnCue Plus PasswordPassword 21Network Configuration Submenu 22RBUS Information Submenu Rbus InformationFrom Figure Remote Devices SubmenuProgrammable Interface Module PIM Status Menu 25Load Control Module LCM or Load Shed Kit Status Menu Load Control Module LCM or Load Shed Kit MenusEvent Log Procedure to View Event HistoryRDC2 Controller Operation TP-6880 10/14 DC2 Controller Operation DC2 Generator Set/ Transfer Switch ControllerDescription Controller KeypadButton Button Function LED Indication5Status Displays, Generator Running Exercise Modes Exerciser ResetOnCue Plus Password Maintenance TimerDC2 Controller Operation TP-6880 10/14 Scheduled Maintenance Scheduled Maintenance Service Schedule Low Oil Pressure Shutdown Oil Change ProcedureLubrication System Engine Oil RecommendationFill with oil Reset the maintenance timer on the controllerDrain the oil Replace the oil filterModel Resvl DC2 Resetting the Maintenance TimerSpark Plugs Model Resv RDC2Paper Element Service Air Cleaner ServiceAir Cleaner, 8RESV/RESVL Models Cooling System Air Cleaner, 10/12RESV/RESVL ModelsHazardous noise Can cause hearing loss EZ-273000-J Storage Procedure Scheduled Maintenance TP-6880 10/14 USB Port TroubleshootingFault Messages IntroductionProblem Possible Cause Corrective Action TroubleshootingAnsi Appendix a AbbreviationsLCB Page TP-6880 10/14