Product Manual

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