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TP-6880 10/1472 Section 6 Troubleshooting
6.5 Troubleshooting
Figure 6-1 contains generator set troubleshooting, diagnostic, and repair information. Check for loose connections
before replacing parts.
Problem Possible Cause Corrective 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
displayisoff.
Low or no battery voltage. Check connections.
Check generator set battery. See Figure 6-1.
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
Section 2.5. C orrect 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.
Gererator thermostat tripped. For trips other than temperature (nuisance trips), reset
the thermostat. See Section 2.6.
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.
Gererator thermostat tripped. For trips other than temperature (nuisance trips), reset
the thermostat. See Section 2.6.
No AC output.
Line circuit breaker in the OFF position. Place the circuit breaker in the ON position.
Line circuit b reaker tripping because of
overload.
Reduce the load on the generator set.
Line circuit b reaker tripping because of short
circuit.
Contact an authorized Kohler distributor/dealer for
service.
Auxiliary winding circuit breaker tripped. Reset the circuit breaker (located in junction box).
Contact an authorized Kohler distributor/dealer for
service if breaker trips repeatedly.
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.
Outoffuel. 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 junction box.)
Contact an authorized Kohler distributor/dealer for
service if breaker trips repeatedly.
Fault shutdown. Check the controller display for fault messages. See
Section 2.5. C orrect 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, ATS, or OnCuer Plus.
Check the remote switch position. Check OnCue Plus.
Engine malfunction. Contact an authorized Kohler distributor/dealer.
Figure 6-1 General Troubleshooting Chart