Kohler 15CCO Service Manual page 80

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