Troubleshooting - Kohler 6VSG Operation Manual

5.5

Troubleshooting

Figure 47 contains generator set troubleshooting, diagnostic, and repair information. Check for loose connections before
replacing parts.
Problem Possible Cause
Controller display
Backlight turns off after about 1 minute with no activity.
backlight is off.
Controller display
Low or no battery voltage.
is off.
Battery weak or dead.
Battery connections reversed or poor.
Fault shutdown.
The generator set
does not crank.
Generator set in the OFF mode.
Air cleaner clogged.
Battery weak or dead.
The generator set
cranks but does
Battery connection poor.
not start, starts
Spark plug wire connection loose.
hard, lacks
Low oil pressure shutdown.
power, or
operates
erratically.
Fuel pressure insufficient.
Engine malfunction.
Line circuit breaker in the OFF position.
Line circuit breaker tripping because of overload.
No DC output.
Line circuit breaker tripping because of short circuit.
Rectifier has failed.
Low output or
excessive drop in Generator set overloaded.
voltage.
Low oil pressure shutdown.
Out of fuel.
Overcrank shutdown.
Auxiliary winding circuit breaker tripped.
Generator set
stops suddenly.
Fault shutdown.
Generator set in the OFF mode.
Remote stop command received from a remote switch,
or OnCue
Engine malfunction.
Figure 47 General Troubleshooting Chart
64
®
Plus.
Recommended Action
Backlight will turn on when a button is pressed or the
generator set starts.
Check connections.
Check generator set battery. See the figure titled: Service
View.
Recharge or replace the battery.
Check the connections.
Check the controller display for fault messages. See the
Faults section. Correct the fault condition and reset the
controller.
Press the RUN button to start the engine or press AUTO to
allow remote starting.
Clean and/or replace the air cleaner.
Recharge or replace the battery.
Clean and tighten the battery connections.
Check the spark plug wires.
Check for oil leaks. Check the oil level and add oil if
necessary.
Check the fuel supply and valves.
Contact an authorized Kohler distributor/dealer.
Place the circuit breaker in the ON position.
Reduce the load on the generator set.
Contact an authorized Kohler distributor/dealer for service.
Verify that the generator is providing AC voltage.
Reduce the load.
Check for oil leaks. Check the oil level and add oil if
necessary.
Check fuel supply.
Reset the controller. If the overcrank fault occurs again,
contact an authorized Kohler distributor/dealer.
Reset the circuit breaker (located in controller's service
access area). Contact an authorized Kohler
distributor/dealer for service if breaker trips repeatedly.
Check the controller display for fault messages. See the
Faults section. Correct the fault condition and reset the
controller.
Press the RUN button to start the engine or press AUTO to
allow remote starting.
Check the remote switch position. Check OnCue
Contact an authorized Kohler distributor/dealer.
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Plus.
TP-6843 12/21