Troubleshooting; Troubleshooting Guide - Generac Power Systems Stationary emergency generator Owner's Manual

TROUBLESHOOTING GUIDE

PROBLEM
Engine won't crank.
Engine cranks but won't start.
Engine starts hard, runs rough.
Engine starts then shuts down.
AUTO/OFF/MANUAL Switch at OFF,
engine continues to run.
No AC output from generator.

Troubleshooting

CAUSE
1. Control panel 7.5 amp fuse blown.
2. Loose or corroded or defective
battery cables.
3. Defective starter contactor.
4. Defective starter motor.
5. Dead or Defective Battery.
1. Out of fuel.
2. Fuel solenoid (FS) is defective
3. Spark plugs defective.
1. Air cleaner plugged or damaged.
2. Defective spark plugs.
3. Fuel pressure incorrect.
4. Insufficient fuel supply.
5. Fuel system set to wrong fuel type.
1. Engine oil level is low.
2. Engine is overheated.
3. Defective Low Oil Pressure Switch
4. Defective Coolant Temperature Switch
5. Defective Control Module circuit board.
6. Coolant Level is Low.
7. Defective Low Coolant Level Switch
1. Defective AUTO/OFF/MANUAL switch
2. Defective Control Module circuit board
1. Main line circuit breaker is tripped/open.
2. Generator internal failure.
3. Thermal circuit breaker open.
*Contact the nearest Dealer for assistance.
CORRECTION
1. Replace fuse.*
2. Tighten, clean or replace
battery cables as necessary.*
3. Replace contactor.*
4. Replace starter motor.*
5. Remove, change or replace battery.*
1. Replenish fuel/turn on fuel valve.
2. Replace solenoid.*
3. Clean, regap or replace plugs.
1. Clean or replace as needed.
2. Clean, regap or replace plugs.
3. Confirm fuel pressure to regulator is as
recommended in SPECIFICATIONS.*
4. Confirm fuel pressure to regualtor is as
recommended in SPECIFICATIONS.*
5. Reconfigure the fuel system. (See
RECONFIGURING THE FUEL SYSTEM in
manual.*
1. Check oil and add oil as needed.
2. Check cooling system for leaks.
3. Replace switch.*
4. Replace switch.*
5. Replace board.*
6. Repair leak - Add coolant.
7. Replace Switch.*
1. Replace board.*
2. Replace board.*
1. Reset to ON/CLOSED.
2. *
3. Auto-reset - Wait 5 min. and attempt restart.
12-1
05/10 B Rev. Trblsht003