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Section 8: Troubleshooting
Generator Set Troubleshooting
Problem
Engine will not crank
Engine cranks but will
not start
Engine starts hard and
runs rough
Unit is set to OFF, but
engine continues to run
No AC output from
generator set
Installation Guidelines For 50 Hz Air-Cooled Generator Sets
Cause
Blown fuse.
Loose, corroded, or faulty battery cables.
Faulty starter contact.
Faulty starter motor.
Discharged battery.
No fuel.
High fuel pressure.
Fuel selector in wrong position.
Faulty fuel solenoid (FS).
Faulty spark plug(s).
Valve clearance out of adjustment.
Air cleaner plugged or damaged.
Faulty spark plug(s).
Incorrect fuel pressure.
Fuel selector in wrong position.
Valve(s) out of adjustment.
Internal engine issue.
Controller wired incorrectly.
Faulty control board.
Generator set MLCB (generator set
disconnect) is OFF (OPEN).
Generator internal failure.
Engine may be warming up. See
Smart
Start.
Correct short circuit condition by replacing 7.5
amp fuse in generator set control panel. Con-
tact an IASD for assistance if fuse continues to
blow.
Tighten, clean, or replace as necessary.*
Charge or replace battery.
Replenish fuel / turn on fuel valve.
Check and adjust fuel pressure.
Set fuel conversion knob to correct position.
Contact an IASD for assistance.
Clean; inspect spark plug gap; replace spark
plug(s) as needed.
Reset valve clearance.
Inspect and clean air cleaner.
Clean; inspect spark plug gap; replace spark
plug(s) as needed.
Verify fuel pressure to regulator is 2.49–2.99
kPa (10–12 in water column) for LP gas, and
0.87–1.74 kPa (3.5–7 in water column) for NG.
Set fuel conversion valve to correct position.
Adjust valve clearance.
Contact an IASD for assistance.
Contact an IASD for assistance.
Set generator set MLCB (generator set
disconnect) to ON (CLOSED).
Contact an IASD for assistance.
Cold
Check controller screen to verify status.
Troubleshooting
Correction
45
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