TP-6591 10/13
38 Section 4 Troubleshooting
Trouble Symptoms
Probable Causes Recommended Actions
Section or
Publication
Reference*
Does not
crank
Cranks but
does not start
Starts hard
No or low
output voltage
Stops
suddenly
Lacks power
Overheats
Low oil
pressure
High fuel
consumption
Excessive or
abnormal noise
Controller
x
Generator set master switch in the
OFF position
Move the generator set master switch to the correct position
(RUN or AUTO).
Section 2
x x
The customer connection fuse (F1)
blown. Note that the remote digital
gage (if equipped) will not function.
Replace the blown F1 fuse. If the fuse blows again, check what
is connected to the generator set.[
Section 2, W/D
x x
The voltage regulator fuse (F2) blown Replace the blown F2 fuse. If the fuse blows again,
troubleshoot the regulator.[
Section 2, W/D
x x
The c oil, injector, fuel pumps, oxygen
sensor, and CO sensor fuse (F3)
blown
Replace the blown F3 fuse. If the fuse blows again, check the
starter solenoid for sticking.[
Section 2, W/D
x x x x
The controller fuse (F4) blown Replace the blown F4 fuse. If the fuse blows again,
troubleshoot the controller.[
Section 2, W/D
x x
The auxiliary winding fuse (F5) blown Replace the blown F5 fuse. If the fuse blows again,
troubleshoot the alternator winding.[
Section 2, W/D
x Start/stop switch inoperative Replace the controller. —
x Incorrect controller settings
Check and adjust the controller.[
I/M
x
Remote stop command received from
a remote switch
Check and remote switch position.
x Controller fault
Troubleshoot the controller.[
Gen. S/M
x x x x x Controller circuit board(s) inoperative Replace the controller circuit board. Gen. S/M
Cooling System
x x Air openings clogged Clean the air openings. —
x x Impeller damaged Replace the impeller, check upstream system. Section 3
x x Seawater strainer clogged or restricted Clean the s trainer. Section 3
x x
High temperature shutdown Allow the engine to cool down. Then troubleshoot the cooling
system (add coolant). Check seawater pump and circuit.
Sec. 3, Eng. O/M
x Coolant level low Restore the coolant to normal operating level. Section 3
x Thermostat inoperative Replace the thermostat. Eng. S/M
* Sec./Section—numbered section of this manual; ATS—Automatic Transfer Switch; Eng.—Engine; Gen.—Generator Set; I/M—Installation Manual; O/M—Operation Manual; S/M—Service Manual;
S/S—Spec Sheet; W /D—Wiring Diagram
[ Have an authorized service distributor/dealer perform this service.
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