Kohler 5ERKM

TP-6079 3/0014 Section 4 Controller Troubleshooting
Is there AC output
when the start button
is held and the unit is
running?
Yes
Is there 12 volts AC output at
the B1/B2 stator winding?
No
Is there approximately
12 VDC at the brushes?
No
No
Separately excite the
generator set to determine if
other components are
inoperative. (See Section
5.1.2, Separate Excitation.)
Yes
No
Is the voltage
regulator
functional?
Is there AC output
voltage?
Is the stator and rotor
functional?
Is the voltage regulator
fuse functional?
D
No
Yes
Replace the voltage regulator.
Yes
Replace the fuse.
No
Replace inoperative
components.
Yes
Replace the
circuit board.
Is the stator
functional?
No
No
Replace
the stator.
Yes
Replace the
circuit board.
Figure 4-6 Troubleshooting the Relay Controller Circuit Board (4 of 4)