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 USB Port

A USB port is located on the front of the controller. 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.

5.3 Fault Messages

The RDC2 controller displays fault messages to aid in troubleshooting. Fault messages, descriptions, 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 2.6.4.

5.4 Circuit Protection

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

5.4.1Load Circuit Breaker

The load 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. Refer to the service views in Section 1 for the location of the circuit breaker.

5.4.2Fuses

Always identify and correct the cause of a blown fuse before restarting the generator set. Refer to Figure 5-1, Troubleshooting Chart, for conditions that may indicate a blown fuse. Obtain replacement parts and service from an authorized Kohler distributor/dealer.

Fan Fuses. Three 30 amp fan fuses are located in the fan fuse and relay box. See Section 1, Service Views, for location.

Engine Fuses. Engine fuses are located in the engine fuse box.

DFuse F1, 5 amps

DFuse F2, ECM 10 amps

DFuse M3, battery charging alternator, 70 amps

DFuse F4, ignition,15 amps.

DFuse F6, starter, 20 amps.

5.4.3Controller Internal Circuit Protection

The controller is equipped with internal circuit protection. Press OFF to reset.

TP-6810 11/13

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Kohler 38RCL, 48RCL, 60RCL manual Troubleshooting, Introduction, USB Port, Fault Messages, Circuit Protection

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.