Multiquip DCA125SSIU Troubleshooting Engine Controller, Engine Controller Troubleshooting MPEC

TROUBLESHOOTING (ENGINE CONTROLLER)

Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown, use Table 20 (Engine Controller Troubleshooting) as a basic guideline for troubleshooting the Microprocessor Engine Controller unit (MPEC). If the problem cannot be remedied, consult our company's business office or service plant.

Table 18. Engine Controller Troubleshooting (MPEC)

Symptom	Possible Problem	Solution
	Low oil level?	Fill oil level.
Low oil pressure light is on.	Oil pressure sending unit failure?	Replace oil pressure sending unit.
	Time delay malfunction in controller?	Refer to dealer.
	Wire shorted?	Inspect/repair wire.
	Fan belt tension incorrect?	Tighten/replace fan belt.
	Air fl ow is not circulating through radiator?	Clean/repair radiator grill.
	Doors open?	Close doors.
High coolant temperature	Exhaust leaking?	Replace/repair gaskets or faulty part.
light is on.	Generator being overloaded?	Check/reduce load.
	Thermostat failure?	Replace thermostat.
	Air intake blocked?	Clean all air intakes.
	Temperature switch failure	Replace temperature switch.
Overcrank light is on.	No or low fuel?	Fill fuel level.
	Controller needs to be calibrated?	Refer to dealer.
	RPM engine speed too high?	Adjust RPM.
Overspeed light is on.	Governor actuator needs to be adjusted?	Adjust governor actuator.
	Governor controller needs to be adjusted?	Adjust governor controller.
	Engine controller needs to be calibrated?	Refer to dealer.
	Magnetic pickup out of adjustment?	Adjust magnetic pickup.
Overspeed and engine start	Magnetic pickup dirty?	Clean magnetic pickup.
lights are on at same time..	Is magnetic pickup cable connected?	Inspect magnetic pickup cable and
		connect cable securely.

PAGE 50 — DCA125SSIU 50 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (12/22/08)