Kohler 40COZ/33CFOZ Service Manual page 51

Controller instrumentation not functioning properly.
Is there a loose input or component
lead connection at the AC fuse
terminal block or at the component?
Is there a blown 1.5-amp fuse at the AC
fuse terminal block? See Figure 5-21.
Instrumentation is inoperative.
Replace or repair the component.
Figure 5-22 Controller Instrumentation
Lamp circuit board not functioning or not functioning
properly (i.e., fault lamps and alarm horn only).
Press the lamp test button.
Do the lamps light?
Is the lamp circuit board receiving
power? Check for input voltage at
P4-6 and P4-1 soldered
connections on the lamp circuit
board. See Figure 5-24.
Is the P3/P4 ribbon connector
undamaged and properly connected?
Replace the
ribbon connector.
Figure 5-23 Lamp Circuit Board
TP-5737 5/01
No
No
Yes
No
No
No
Yes Secure the connection.
Yes Replace the fuse.
Improper input signal. The
main circuit board is
inoperative.
The panel circuit board is
Yes
inoperative. Replace it.
Replace the
Yes
main circuit
board.
Section 5 Decision-Makert 3+ Troubleshooting 37