Kohler 5EOZ Manual page 43

Is there AC output
when the start button
is HELD and the unit
C
is running?
No
Is there 12VDC at
the exciter field?
No
Replace the
controller
circuit
board.
Go to B at the beginning
of the preceding page.
(OPTIONAL)
Separately excite the
generator set to
determine if other
components are
inoperative.
Is AC output voltage at
spec.? (See Section 7.3,
Separate Excitation).
Yes
Test the
voltage
regulator.
Figure 6-7 Troubleshooting Relay Controller Circuit Board (4 of 4)
TP-6053 7/04
Is AC output at the
correct voltage
Yes
(e.g. 120 volts AC)?
Yes
Yes
Test the stator,
and the main
field.
Is there 12VAC output at the
B1/B2 stator winding?
Yes
Replace the
controller circuit
board.
Test the stator, main
No
field (rotor), and
exciter/armature.
Is the voltage
regulator
No
fuse okay?
Replace the
Yes
fuse.
Test the
voltage
regulator.
Test the stator,
main field (rotor) and
No
exciter/armature.
Section 6 Controller Troubleshooting
No
31