Kohler Comprehensive Troubleshooting Guide for 12RESV and 8RESV Systems

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.

TP-6880 10/14 Section 6 Troubleshooting 71