TP-6735 7/1730 Section 3 Troubleshooting
Problem ReferenceCorrective ActionTestPossible Cause
Starts hard
Low battery voltage Check battery voltage during
cranking.
Check battery charger
connections, power supply, and
operation.
Charge battery. Replace battery if
necessary.
Tighten loose connections.
O/M
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 5.11
DSAI leads
incorrectly
connected or
disconnected
Check DSAI connection. Connect for natural gas.
Disconnect for LP.
Section 5.11.2
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 5.11.3
Worn piston rings,
valves
Check compression. See the
engine service manual.
See engine service manual. Engine S/M
Starts but
shuts
down
Fault shutdown Check for a fault shutdown code
on the controller display. Identify
the cause of the fault.
Correct the fault and then press
the controller’s OFF button to
reset the controller.
Section 5.10
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
* RDC controller settings can be checked and adjusted using the controller user interface or using a personal computer running SiteTech
software. DC controller settings can only be changed using SiteTech.
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