Section 3 Transfer Switch Troubleshooting; Initial Checks; Transfer Switch Troubleshooting Table - Kohler KSS Manual

3.1

Initial Checks

When troubleshooting the transfer switch mechanism,
always check for simple causes first: broken or loose
wires, corroded contacts, exposure to dirt or foreign
material, etc.
Check the time delays, source settings, and other
system parameters as described in Sections 2 and 4
before concluding that there is a mechanical problem
with the transfer switch. Many transfer problems can be
traced to inappropriate controller settings.
Verify that the voltage on the nameplate matches the
actual nominal source voltage. Use the procedure in
Section 3.3.2 to measure the source voltage. Observe
safety precautions when taking voltage measurements.
Verify that the measured voltage matches the transfer
switch rated voltage.
Problem
Generator set engine does not
start
O/I/M= Operation and Installation Manual; O/M = Operation Manual; TOC = Table of Contents, this manual;
W/D = Wiring Diagrams
TP-6461 1/08

Section 3 Transfer Switch Troubleshooting

Possible Cause
Engine start time delay is running
Loose engine start connection
No engine start signal from the
ATS
Generator set master switch not in
the AUTO position
Generator set problem
3.2 Transfer Switch
Troubleshooting Table
The following table lists potential problems with possible
causes and suggested remedies. Section numbers in
the last column refer to other sections of this manual.
TOC refers to the Table of Contents in this manual; see
the table of contents for service procedures for your
transfer switch.
Also see the controller troubleshooting table in Section
2.9.
Always follow the safety precautions at the beginning of
this manual when troubleshooting and servicing the
transfer switch.
Check
Check for active time delays on the
controller display. Press End Delay
button to end the delay, if necessary.
Use View Time Delay screen to check
time delay settings.
Check connections. Tighten
connections and/or replace wiring if
necessary.
Test the engine start contact operation.
Move generator set master switch to
the AUTO position.
Troubleshoot the generator set.
Section 3 Transfer Switch Troubleshooting
See
Section
2.5
ATS O/I/M
ATS O/I/M
4.7
Generator
manuals
37