Kohler 4EOZ Service page 62

C
If there AC output when the
on/off switch is held and the
unit is running?
No
Is AC voltage present on the
capacitor (CAP) connections
(C1--C2)? See Section 11.
No
Are the CAP connections
(C1--C2) okay?
No
Reset the connections.
D Charge the capacitor to
reset
retentivity.
D Check the performance of
the capacitor.
D Check
(D4--D5) work correctly.
D Check if the rotor works
correctly.
D Check if the stator works
correctly.
Note: Follow the procedures
Figure 8-9 Troubleshooting Relay Controller Control Panel (4 of 4)
50 Section 8 Controller Troubleshooting
Is AC output at the correct
Yes
voltage (e.g. 120 volts AC)?
Check the stator and the
rotor. See Section 9.
Yes
Check the stator winding
connections. See Section 9
and Section 11.
Yes
the magnetic
if the diodes
included in the Engine
Service Manual and
Section 9 of this
manual.
Yes
No
Is the 10-amp fuse (F2)
okay?
No
Change the fuse (F2).
Change the bridge rectifier.
Is 12 volts DC present on
the coil of the K3 relay?
No
Are the K3 relay contacts
opened (30--87a)?
Change the K3 relay.
Yes
Is the bridge rectifier (BR1)
okay?
No
D Check the K3 connection
condition.
D Check the BRI connection
condition (10-11).
D Check the TB1 connection
condition (10-11).
D Are these checks okay?
Check the stator winding
(10--11).
Note: See Section 9.
TP-6137 5/03
Yes
Yes
Yes
Yes