Kohler 38RCL, 48RCL, 60RCL Generator Fault Messages and Shutdowns

Kohler Generator Fault Messages and Locked Rotor Shutdown Solutions

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

Exer Not Sch	W	Exercise Not Scheduled. No exercise has been	See Section 2.5 for instructions to set
		scheduled on the RDC2 controller.	the exerciser.

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

Generator	SD	Governed frequency falls below 90% of the	Reduce the load and restart the
Frequency Low		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).

Generator	SD	Generator Voltage High. Output voltage	Contact an authorized
VoltageL1-L2		exceeds 120% of the system nominal voltage for	distributor/dealer for service.
High		more than 2 seconds.

Generator	SD	Generator Voltage Low. Output voltage falls	Reduce the load and restart the
VoltageL1-L2		below 80% of the nominal system voltage for	generator set.
Low		more than 10 seconds.	Contact an authorized
			Contact an authorized
			distributor/dealer for service.

Lo Crank Vlt	W	Low cranking voltage. Battery voltage falls	Charge or replace the battery.
		below 60% of system battery voltage for more
		than 6 seconds while the starter is engaged.

Locked Rotor	SD	No engine rotation is sensed during cranking.	Check the battery.
		Shuts down 3 seconds after the fault is detected.	Check for loose connections.
			Contact an authorized
			distributor/dealer for service.

MainPwrOverL	SD	Main power overload. An over current fault on	Contact an authorized
Shutdown		the 70 controller power output (short circuit).	distributor/dealer for service.

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.

Over Crank	SD	Three unsuccessful starting attempts.	Check the fuel supply, spark plug,
			and battery.
			Check for loose connections.
			Contact an authorized
			distributor/dealer for service.

Speed Sensor	SD	Engine speed sensor has failed or engine	Contact an authorized
Fault		stalled.	distributor/dealer for service.

Total Power	SD	Measured load is greater than 102% of the	Reduce the load.
High ShtDwn		generator set power rating for more than 1
		minute. (38RCL only)

Figure 2-5Controller Fault Messages

24 Section 2 Generator Set Operation

TP-6810 11/13

38RCL, 48RCL, 60RCL specifications

The Kohler RCL series of generators, particularly the 60RCL, 48RCL, and 38RCL models, represents a premium choice for those seeking reliable power solutions for residential and light commercial applications. Each model is tailored to meet diverse power needs, ensuring uninterrupted electricity supply during outages.

The 60RCL is engineered for maximum performance, offering 60 kW of power. This model is ideal for larger homes or small businesses that require dependable backup power. Its powerful Kohler engine is designed to deliver a quiet, smooth performance, while the advanced sound-dampening features keep noise levels to a minimum. The 48RCL offers a slightly lower output at 48 kW, making it suitable for medium-sized homes. Its compact design allows for flexible installation options, whether it’s outdoors or in a utility area, while still providing robust power during critical times.

The 38RCL, while the smallest of the series with 38 kW output, is perfect for homes that need a reliable backup generator without the bulk. Its streamlined design does not compromise on performance, making it an excellent choice for energy-efficient homes. All models in the RCL series come equipped with Kohler's Command Pro commercial-grade engine, ensuring longevity and reliability even in the harshest conditions.

A standout feature of the RCL series is the integrated KOHLER® 2.4-inch color display, which allows users to monitor generator performance in real-time. This user-friendly interface provides vital information such as operational status, run time, and maintenance notifications. Additionally, the series is designed with automatic transfer switches that allow for seamless switching between utility and generator power.

Moreover, these generators incorporate advanced control systems with remote monitoring capabilities, enabling users to check the status of their power supply from a smartphone or tablet. Designed with efficiency in mind, the RCL series boasts a fuel-efficient operation that supports both natural gas and propane, catering to diverse energy preferences.

In summary, the Kohler 60RCL, 48RCL, and 38RCL generators combine high performance, advanced technology, and user-friendly features. They are reliable solutions for anyone looking to safeguard their power needs, ensuring peace of mind when it matters most.