Specifications

TROUBLESHOOTING
TROUBLESHOOTING
CHART
No. Problem Symptom Possible Cause Corrective Action
1 System
does not
start
Power Box is
Running indicator
does NOT light
12V DC wiring is
disconnected or
incorrect
Check the cables and cable
connections.
2 Battery is too weak Check the battery voltage.
This system needs
approximately 10 to 12V DC.
The system can be started if
there is enough battery
capacity to start the engine.
3 Thermal switch If you are restarting
immediately after running
with heavy load, allow the
system to cool. Check the
thermal switch cables. If
these cables are
disconnected or the thermal
switch is damaged, the
system will not run. If the
thermal switch is damaged,
see your authorized Yanmar
marine dealer or distributor.
4 Faulty switch Check the switch. If the
switch is faulty, replace the
switch. See your authorized
Yanmar marine dealer or
distributor.
5 Fuse blows out Check the fuse on the panel.
Replace if necessary. If the
fuse continues to blow, see
your authorized Yanmar
marine dealer or distributor.
6 The Power Box is
Running indicator LED
blows out
Check the power box fans. If
the fan is running and the
indicator blows out, the LED
must be replaced. See your
authorized Yanmar marine
dealer or distributor.
7 Power box See your authorized Yanmar
marine dealer or distributor.
KMG65E Operation Manual 35