Kohler 20CCOZ Service Manual

6-4 Generator/Controller Troubleshooting TP-5606 6/02
Does engine
continue to run
after Start/Stop
Switch is
released?
Yes
No
Observe LED’s
while starting set
again. Does
LED1 light?
Yes
No
Does AC Voltmeter
indicate any generator
output when Start/Stop
Switch is in Start
Position?
Does LED4
light?
Yes
No
Does LED5
light less than 5
seconds after
LED1 lights?
Yes
Replace
controller circuit
board.
Perform separate
excitation test.
Does test pass?
No
Replace
controller
circuit board.
No
Does LED4 light
before LED5?
Is generator a
single-phase unit?
B
(From
Sheet 2)
.
Go to C
(Sheet 4)
Replace controller
circuit board.
.
Yes Yes
No
Yes
Test B1/B2
stator winding
output. Is
output good?
Yes
Replace
controller
circuit board.
Yes
Replace
controller
circuit board.
No
Repair/replace
defective
stator.
No
Follow separate
excitation test
instructions to
isolate defective
exciter, rotor, or stator.
Check possible
engine oil
pressure
problem.
Check possible
engine high
temperature
problem.
If there is no
engine problem,
replace
controller circuit
board.
No
Does generator
output exceed
63 Hz?
Replace
controller
circuit board.
No
Figure 6-2. Troubleshooting Flow Chart (Sheet 3 of 4)

Kohler 20CCOZ Specifications

General

Brand	Kohler
Model	20CCOZ
Category	Inverter
Language	English