Section 4 Troubleshooting; Introduction; Circuit Protection; Line Circuit Breaker - Kohler 15REYG Operation

4.1 Introduction

Use the following charts 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 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 the equipment.

4.2 Circuit Protection

If the generator set circuit breaker trips or the fuses blow
repeatedly, see Section 4, Troubleshooting, for possible
causes.
4.2.1

Line Circuit Breaker

A line circuit breaker interrupts the generator output in
the event of a fault in the wiring between the generator
and the load. The line circuit breaker location is shown
in Figure 1-1. If the circuit breaker trips, reduce the load
and switch the breaker back to the ON position.
4.2.2

Fuses

The engine harness contains three 10-amp inline fuses.
Four additional fuses are located inside the engine fuse
box. See the service views in Section 1 for the fuse
locations.
Always identify and correct the cause of a blown fuse
before restarting the generator set. Refer to section 4,
Troubleshooting, for conditions that may indicate a
blown fuse. Obtain service from an authorized
distributor/dealer.
F1 Auxiliary Winding Fuse. A replaceable 10-amp
fuse protects the alternator.
F2 Relay Fuse. A replaceable 10-amp fuse protects the
engine relays. If the generator set does not crank, check
the battery and battery connections and then check the
relay fuse.
F3 Controller Fuse.
protects the controller circuitry. If the controller display is
TP-6728 10/11
A replaceable 10-amp fuse

Section 4 Troubleshooting

dark, check the battery and battery connections and
then check the controller fuse.
Engine Fuses. Four engine fuses are located in the
engine fuse box. Contact your distributor or dealer for
replacement fuses.
Fuse Description
F1 10 Amp Auxiliary Winding
F2 10 Amp Relay Interface Board
F3 10 Amp Controller
Figure 4-1 Generator Set Fuses

4.3 Faults

4.3.1

Fault Codes

The Advanced Digital Control displays fault codes to aid
in troubleshooting. Fault codes, descriptions, and
recommended checks are listed in Figure 2-4.
Identify and correct the cause of the fault condition.
Then reset the controller after a fault shutdown. See
Section 2.3.5.
4.3.2

Fault History

Use the following procedure to view the last 20 fault
codes on the ADC 2100 controller.
Procedure to View Fault History
1. Press and HOLD the Select button on the
controller. Move the generator set master switch to
the RUN position. (The generator set engine will
not start.)
Continue to hold the select button until the software
version number (vX.XX) is displayed on the
controller.
2. Release the Select button.
3. Press and HOLD both arrow buttons until F__1 is
displayed, indicating the most recent fault.
4. Press the UP arrow button to the view the fault
code.
5. Press UP again to view the generator run time
hours at the time of the fault.
6. Press UP to step to the next fault.
Part Number
358337
223316
223316
Section 4 Troubleshooting 31