Troubleshooting points, Troubleshooting, Problem – Generac Power Systems Air-cooled Recreational Vehicle Generator 9734-3 User Manual

Page 17: Cause, Correction

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Generac NP-66LPG Recreational Vehicle Generator

TROUBLESHOOTING POINTS

PROBLEM

Engine woni crank.

CAUSE

1. 15 amp fuse blown.

2. Loose or corroded or defective

battery cables

3. Defective starter contactor.
4. Defectiva starter motor.
5. Battery is discharged or defective.

6. Defective Controller Circuit Board

CORRECTION

1

.

2

.

3.
4
5.

6

.

Trghten, dean or replace
as necessary.

Replace contactor.
Replace starter motor.
Recharge or replace battery.

Replace defective drcuit board.

Engine cranks but woni start

1. Out of fuel.

2. Fuel shutoff valve to RV fuel system

(if so equipped) is closed.

3. Engine is flooded.
4. Defective Controller Circuit Board
5. Spark plugs defective.
6. Defective ignition magneto on engine.
7. Bad carburetor.

8. Dirty engine air cleaner filter.

1. Replenish fuel tank.

2. Open fuel shutoff valve.

3. Wait 5-10 minutes; try again.
4. Replace defective circuit board.
5. Clean, regap or replace plugs.
6. Replace, if defective.
7. Adjust, repair or replace.

8. Clean or replace filter as needed.

Engine starts hard, runs rough.

1. Dirty engine air cleaner filter.
2. Defective spark plugs.
3. Defective ignition magneto on engine.

1. Clean or replace fitter as needed.

2. Clean, regap or replace plugs.
3. Replace, if defective.

Engine starts, shuts dovm when
Start/Stop switch is released.

1. Engine oil level is low.

1.

2. Defective Controller Circuit Board.

2.

3. Defective Low Oil Pressure Switch

3.

4. Loss of generator AC-output.

4.

Check oil and add oil as needed.

Replace if defective.
Replace defective switch.

Contact an authorized service
facility.

No AC output from generator.

1. Check main line circuit breaker.

2. Transfer switch (if so equipped) is set

to wrong position.

3. Failure in vehicle electrical system.
4. Generator component failure.

1. Reset to ON or CLOSED.

2. Reset transfer switdi.

3. See vehicle manual.
4. Contact an authorized service

facility.

R e c r e a t i o n a l V e h i c l e G e n e r a t o r

17

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