Carrier 69UG15 manual Section Troubleshooting, Remedy, Condition, Possible Cause, Reference

SECTION 3

TROUBLESHOOTING

		REMEDY/
CONDITION	POSSIBLE CAUSE	REFERENCE
		SECTION
3.1 DIESEL ENGINE
3.1.1 Engine Will Not Start
	Battery insufficiently charged	Charge
	Battery terminal post or battery defective	Check
Starter motor will not crank or low	Electrical connections at starter are bad	Correct
	Starter motor malfunctions	See 3.1.4
cranking speed
	Starter motor solenoid defective	Engine Manual
	Open starting circuit	See 3.1.5
	Incorrect grade of lubricating oil	Section 1.10.f.
	No fuel in tank	Sections
		1.9/1.10.g
	Air inside the fuel system	Section 4.4.1
	Water inside the fuel system	Drain Sump
	Plugged fuel filters	Replace
Starter motor cranks, but fails to	Air intake heater is bad	Section 4.4.15
	Low oil / Oil pressure switch defective	Section 4.4.7
start
	Faulty heater switch	Section 4.4.8
	Plugged fuel lines to injector(s)	Engine Manual
	Mechanical lift fuel pump malfunction	Engine Manual
	Fuses F1, F2, F3, F4 are bad	Check/ replace
	Loose or no connection between wire harness and	Check/correct
	electronic governor
Starter cranks and engages, but	Engine lube oil too heavy	Section 1.10.f.
dies after a few seconds	Voltage drop in starter cable(s)	Check
3.1.2 Engine Starts Then Stops
	No fuel in tank	Sections
		1.9/1.10.g
	Fuel heater switch not held long enough	Hold switch
	Fuel filter restricted	Replace
	Air cleaner or hose restricted	Section 4.4.13
	Engine crankcase breather or hose restricted	Section 4.4.14
	Safety device open	Section 1.8
	Open wiring circuit to fuel solenoid	Check
Engine stops after a few rotations	Fuel solenoid defective	Replace
	Fuel supply restricted	Sections 1.10.g,
		4.4.2, and 4.4.3
	Mechanical lift fuel pump malfunction	Engine Manual
	Low oil / Oil pressure switch defective	Section 4.4.7
	Leak in fuel system	Check
	Injector nozzle(s) defective	Engine Manual
	Injection pump defective	Engine Manual
	Generator internal overloads open	Table 1-4

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