Section 4 Troubleshooting; Introduction; Initial Checks; Controller Service Access - Kohler 6VSG Service Manual

4.1 Introduction

Corrective action and testing in many cases requires
knowledge of electrical systems and electronic circuits.
Have an authorized distributor/dealer or trained
service technician perform testing and service.
Refer to the engine service manual for engine service
information. See the List of Related Literature for the
document part number.
If the troubleshooting procedures in this section
identify a failed part, refer to the parts catalog for
replacement part numbers. See the List of Related
Literature in the Introduction for the parts catalog
number.

4.2 Initial Checks

When troubleshooting, always check for simple
problems first. Check for the following common
problems before replacing parts:
• Loose connections or damaged wiring.
• Dead battery.
• Inadequate fuel supply.
primary or secondary
connections to the fuel solenoid valve, a damaged
or closed fuel shutoff valve, an empty LPG fuel tank,
or other problems with the fuel supply. Check the
fuel supply pressure to the generator set.
Section 5.8, Fuel Systems.
• Fault shutdown. Check for a fault message on the
controller display.
warning and shutdown fault messages. If a fault
message is displayed, identify and correct the
cause of the fault condition. Then press the OFF
button on the controller to clear the fault.
• Incorrect controller settings. Always check the
controller settings before replacing the controller.
Section 3.3.1 for controller settings. Refer to the
operation manual for instructions to check and
change the controller settings from the controller
keypad, or use a personal computer and Kohler
™
SiteTech software.
TP-6844 1/13
Check for damaged
fuel regulators, loose
Section 4.7 describes the

Section 4 Troubleshooting

4.3 Controller Service Access

The USB port is accessible from the front of the
controller. Remove the service access door to access
the USB port. See Figure 4-1.
Section 3.3 lists controller settings. Some settings can
be changed from the controller keypad.
adjustable settings require a personal computer
(laptop) with Kohler
Use a USB cable with a mini-B connector to connect
the controller's USB port to your PC.
See TP-6701, SiteTech
for software operation instructions.
Figure 4-1
1. USB port (for service)
2. Not used
Figure 4-1 Controller Service Access (cover
removed)
See

4.4 Circuit Protection

Line Circuit Breaker
The line circuit breaker interrupts the generator output
in the event of an overload condition or a fault in the
wiring between the generator and the load.
circuit breaker trips, check the wiring and if necessary,
decrease the Maximum Percent Capacity.
Controller Internal Circuit Protection
The controller is equipped with internal circuit
®
protection for accessory and main power overload
conditions. Press OFF to reset.

4.5 OnCue Troubleshooting

See TP-6796, OnCue Software Operation Manual, for
troubleshooting instructions for the OnCue Generator
Management System.
® ™
SiteTech software for changes.
™
Software Operation Manual,
1 2
Section 4 Troubleshooting
All other
KPS_078
If the
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