TP-6881 7/1568 Section 4 Troubleshooting
Problem ReferenceCorrective ActionTestPossible Cause
Starts hard
Low battery voltage Check battery voltage during
cranking.
Check battery charger
connections and utility power
connection to the generator set.
Charge battery. Replace battery if
necessary.
Tighten loose connections.
O/M
W/D Section 7
Air cleaner clogged Check for a dirty air cleaner
element.
Replace element. O/M
Fuel mixture
adjustment
incorrect
Use oxygen sensor to check fuel
mixture.
Adjust fuel mixture. Section 5.13
Fuel selector valve
incorrectly set for
thetypeoffuel
used.
Check the fuel selector valve.
Check the controller settings.
Turn the selector valve to the
correct fuel type, LPG or NG. See
Figure 5-32.
Use the controller or SiteTech to
verify the controller fuel settings
for LPG or NG.
Section 5.13.2
Section 3.3
Spark plug(s) Check spark plug condition and
gap.
Replace or regap spark plug(s). O/M
Spark plug wire(s) Check spark plug wires and
connections.
Tighten connections. Replace
spark plug wires if damaged.
Engine S/M
Ignition
components (spark
control or ignition
module)
Test ignition components
according to instructions in the
engine service manual.
Replace ignition components if
necessary.
Engine S/M
Insufficient fuel
pressure
Check fuel pressure to the
generator set. Verify adequate
fuel pressure and pipe size for the
generator set plus all other gas
appliances.
Contact fuel supplier to replace
fuel supply lines with larger pipe
and replace gas meter if fuel
pressure is insufficient.
Section 5.13.3
Engine problem. Troubleshoot the engine. See engine service manual. Engine S/M
Noisy
operation
Exhaust system
leaks
Check silencer and connections
for leaks.
Replace gaskets and exhaust
system components as
necessary.
—
Engine not running
smoothly
See “Erratic operation,” this table. See “Erratic operation,” this table. —
Broken or damaged
vibromount(s)
Inspect vibromounts. Replace as necessary. Section 6
Loose or vibrating
sheet
metal/housing
Check for loose screws and
rivets.
Retighten screws, replace rivets.
—
Exhaust piping or
air inlets/outlets not
securely installed
Inspect for loose parts. Secure loose parts as necessary. —
Excessive
engine/generator
vibration
Check rotor, crankshaft, bearing,
etc. (disassembly of engine
and/or alternator may be
required).
Check, rotor, crankshaft, bearing,
etc. (disassembly of engine
and/or alternator may be
required).
Engine S/M
Overheats
Inadequate cooling Inspect engine and enclosure for
air intake obstructions.
Clear any air intake obstructions. O/M
Air cleaner clogged. Check for a dirty air cleaner
element.
Replace air cleaner element. O/M
W/D = Wiring Diagram(s) (Section 7 ) S/S = Generator Set Specification Sheet O/M = Generator Set Operation Manual
I/M = Generator Set Installation Manual Engine S/M = Engine Service Manual
* RDC2 controller settings can be checked and adjusted using the controller user interface or using a personal computer running SiteTech
software. DC2 controller settings can only be changed using SiteTech.
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