TP-6772 2/14b
61Section 4 TroubleshootingTP-6772 2/14b
Section or
Publication
Reference*
Recommended ActionsProbable Causes
Trouble Symptoms
Section or
Publication
Reference*
Recommended ActionsProbable Causes
Excessive or
abnormal noise
High fuel
consumption
Low oil
pressure
Overheats
Lacks power
Stops
suddenly
No or low
output voltage
Starts hard
Cranks but
does not start
Does not
crank
Electrical System (DC circuits)
x x
Battery connections loose, corroded,
or incorrect
Verify that the battery connections are correct, clean, and tight. Section 3
x x
Battery weak or dead Recharge or replace the battery. The spec sheet provides
recommended battery CCA rating.
Section 3, S/S
x x
Engine harness connector(s) not
locked tight
Disconnect the engine harness connector(s) then reconnect it to
the controller.
W/D
x Fault shutdown Reset the controller. Section 2
x
High exhaust temperature switch
inoperative
Replace the inoperative switch. Gen. S/M or W/D
x x
High water temperature switch
inoperative
Replace the inoperative switch. Gen. S/M or W/D
x x Starter/starter solenoid inoperative Replace the starter or starter solenoid. Eng. S/M
x Faulty ground connection Clean and retighten the connection. —
Engine
x x x x x Compression weak
Check the compression.[
Eng. S/M
x x x x x
Engine overload Reduce the electrical load. See the generator set installation
manual for wattage specifications.
I/M
x
Exhaust system leak Inspect the exhaust system. Replace the inoperative exhaust
system components.[
Section 3, I/M
x
Exhaust system not securely installed Inspect the exhaust system. Tighten the loose exhaust system
components.[
Section 3, I/M
x
Overspeed shutdown Reset the controller. If the overspeed fault occurs again, contact
the distributor/dealer.
x x x x Governor inoperative
Adjust the governor.[
Gen. S/M
x x Valve clearance incorrect
Adjust the valves.[
Eng. S/M
x Vibration excessive Tighten all loose hardware. —
* 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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