3Controller Fault Messages | Kohler 8/10/12RESVL instruction

	Warning (W) or
Fault	Shutdown (SD)	Condition	Check

Frequency High	SD *	Governed frequency exceeds 110% of the	Contact an authorized
		system’s frequency setpoint for more than 10	distributor/dealer for service.
		seconds. Function becomes active 10 seconds
		after engine start (10 second inhibit).

Frequency Low	SD *	Governed frequency falls below 90% of the	Reduce the load and restart the
		system frequency setting for more than	generator set.
		10 seconds, or 1 Hz below the system frequency	Contact an authorized
		setting for more than 60 seconds.	distributor/dealer for service.
		Function becomes active 10 seconds after	distributor/dealer for service.
		Function becomes active 10 seconds after
		engine start (10 second inhibit).

Lo Crank Vlt	W	Low cranking voltage. Battery voltage falls below	Charge or replace the battery.
		8 VDC for more than 6 seconds while the starter
		is engaged.

MainPwrOverL	SD	Main power overload. An over current fault on	Contact an authorized
		the 70 controller power output (short circuit).	distributor/dealer for service.
			Check for shorted run relay.
			Check wiring for short circuits.

Not in Auto	W	The generator set is not in Automatic (standby)	Press AUTO to place the generator
		mode. Remote start and stop commands from a	set in Automatic mode, when
		transfer switch or remote switch will be ignored.	appropriate.

Oil Pres Low	SD *	The LOP switch indicates low oil pressure for	Check for leaks in the lubrication
		more than 5 seconds. Function becomes active	system.
		30 seconds after crank disconnect (30 second	Check the oil level and add oil if the
		inhibit).	Check the oil level and add oil if the
		inhibit).	level is low.
		Note: The low oil pressure shutdown does not	level is low.
		Note: The low oil pressure shutdown does not	Check the oil pressure switch and
		protect against low oil level. Check the engine oil	Check the oil pressure switch and
		protect against low oil level. Check the engine oil	wiring
		level regularly as recommended in Section 5.
Over Crank	SD	Three unsuccessful starting attempts.	Check the fuel supply, spark plug,
			and battery.
			Reset the thermostat.
			Check for loose connections.
			Contact an authorized
			distributor/dealer for service.
Spd Sens Flt	SD	Engine speed sensor has failed or engine	Contact an authorized
		stalled.	distributor/dealer for service.

Total Power	SD	Measured load is greater than 102% of the	Reduce the load.
High		generator set power rating for more than 1
		minute (10RESV and 12RESV only).

Volts L1-L2	SD *	Generator voltage high. Output voltage exceeds	Contact an authorized
High		120% of the system nominal voltage for more	distributor/dealer for service.
		than 2 seconds.

Volts L1-L2 Low	SD *	Generator voltage low. Output voltage falls	Reduce the load and restart the
		below 80% of the nominal system voltage for	generator set.
		more than 10 seconds.	Contact an authorized
			Contact an authorized
			distributor/dealer for service.

* Engine cooldown runs before shutting down.

Figure 2-3Controller Fault Messages

26 Section 2 Generator Set Operation

TP-6880 10/14

Image 26

Kohler 8/10/12RESVL manual 3Controller Fault Messages, Fault Shutdown SD Condition Check

Contents

RDC2 TP-6880 10/14a Generator Set Identification Numbers Accessory Number Accessory DescriptionProduct Identification Information Controller Identification Table of Contents DC2 Controller Operation Scheduled MaintenanceTroubleshooting Accidental Starting Safety Precautions and InstructionsBattery Accidental starting Can cause severe injury or death Carbon monoxide Can Cause Engine Backfire/Flash FireExhaust System Fire Can cause severe injury or death Fuel System Hazardous Noise Hazardous voltage Will cause severe injury or death Heavy Equipment Hot Parts Introduction Transfer Switch LiteratureAccessory Literature List of Related Literature Generator Set Application NameplateEmission Information Emission Compliance Period Service Assistance Service Assistance TP-6880 10/14 Descriptions and Service Views RDC2 Controller Features DC2 Controller Features Programmable Interface Module PIM AccessoriesCarburetor Heater Load Control Module LCM Service Views 1214 3Service View Prestart Checklist Generator Set Operation Generator Set Operation TP-6880 10/14 Exercising the Generator Set Generator Set Operation Unloaded Cycle Exercise with Complete System Diagnostics Automatic Operation with Other Transfer SwitchesSetting the Exerciser Exercise Unloaded Full-Speed Exercise Power Failure During Exercise CycleSystem Diagnostics Loaded Full-Speed Exercise with RXT only Resetting the Controller after a Fault Shutdown FaultsATS Communication Errors Shutdowns Fault Message Shutdown SD Condition Check 3Controller Fault Messages Fault Shutdown SD Condition Check Generator Enclosure Thermostat Generator Set Operation TP-6880 10/14 RDC2 Controller Operation RDC2 Generator Set/ Transfer Switch ControllerControls and Indicators Button Function Controller Keypad LED IndicatorsButton LED Operation LCD Display Active Alert Changing Settings Controller PowerBattery Charging Procedure to Change Settings Changing Settings on the RDC2 Controller 7Changing Settings Changing the Exercise Settings Setting the ExerciserSetting the Exerciser at Controller Power-up Procedure to Set the Exerciser 8Procedure to Set the Exerciser on the RDC2 Controller RDC2 Controller Menus Main Menu Overview Menu Engine Metering Menu Generator Metering Menu Voltage Calibration Generator Set Information Menu Genset Run Time Menu Genset System Menu Setting the ExerciserAdjusting the Display Contrast Voltage Regulator VR Voltage Adj ATS Status Menu Screens on this page do not appear ATS Configuration Menu Changing ATS Configuration Settings Date and Time Menu Networking Information Menus Networking Status Submenu Dhcp Dhcp Submenu Networking Configuration Submenu OnCue Plus PasswordPassword 21Network Configuration Submenu Rbus Information 22RBUS Information Submenu Remote Devices Submenu From Figure Programmable Interface Module PIM Status Menu Load Control Module LCM or Load Shed Kit Menus 25Load Control Module LCM or Load Shed Kit Status Menu Procedure to View Event History Event Log RDC2 Controller Operation TP-6880 10/14 DC2 Generator Set/ Transfer Switch Controller DC2 Controller Operation LED Indication Controller KeypadButton Button Function Description 5Status Displays, Generator Running Exerciser Reset Exercise Modes Maintenance Timer OnCue Plus Password DC2 Controller Operation TP-6880 10/14 Scheduled Maintenance Scheduled Maintenance Service Schedule Engine Oil Recommendation Oil Change ProcedureLubrication System Low Oil Pressure Shutdown Replace the oil filter Reset the maintenance timer on the controllerDrain the oil Fill with oil Model Resv RDC2 Resetting the Maintenance TimerSpark Plugs Model Resvl DC2 Paper Element Service Air Cleaner ServiceAir Cleaner, 8RESV/RESVL Models Air Cleaner, 10/12RESV/RESVL Models Cooling System Hazardous noise Can cause hearing loss EZ-273000-J Storage Procedure Scheduled Maintenance TP-6880 10/14 Introduction TroubleshootingFault Messages USB Port Troubleshooting Problem Possible Cause Corrective Action Appendix a Abbreviations Ansi LCB Page TP-6880 10/14