Kohler 14RES Manual page 31

Problem Possible Cause
Fault shutdown
Stops
suddenly
No fuel
Fuel line restriction
Fuel lines too long
Air cleaner clogged
Blown fuse
Spark plug(s)
Engine overheated
(hot engine only)
Low oil pressure
(LOP) switch
Fuel valve/fuel
regulator
Engine overloaded
Magnetic pickup
connections
Ignition module
Loss of generator
output voltage to
controller
Inadequate cooling
Overheats
Fuel mixture
adjustment
incorrect
W/D = Wiring Diagram(s) (Section 7)
I/M = Generator Set Installation 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.
TP-6735 7/17
Test
Check for a fault shutdown code
on the controller display. Identify
the cause of the fault.
Check fuel valves and fuel supply. Open manual fuel valve. Contact
Inspect fuel lines.
Check fuel line length and pipe
size.
Check for a dirty air cleaner
element.
Check fuses F2 and F3 on the
controller.
Check spark plug(s).
Check air intake and generator
set enclosure air inlets and outlet.
Use oxygen sensor to check fuel
mixture.
Check oil level.
Check oil pressure.
Attempt startup. If unit shuts
down, remove lead from LOP
switch and reset controller. A
successful restart attempt
indicates a faulty LOP shutdown
switch.
Note: Check engine oil pressure
before performing test and/or
replacing LOP shutdown switch.
Check fuel valve connections.
Check regulator/valve operation.
Check fuel pressure.
Reduce electrical load and check
operation.
Check for loose connections to
the mag pickup.
Test the ignition system according
to the instructions in the engine
service manual.
Check connections at P2 plug.
Check continuity of AC sensing
leads 11 and 44 (1 ph) or V7, V8,
and V9 (3 ph).
See Section 5 for alternator test
procedures.
Inspect engine and enclosure for
air intake obstructions.
Use an oxygen sensor to check
the fuel mixture.
S/S = Generator Set Specification Sheet
Engine S/M = Engine Service Manual
Corrective Action
Correct the fault and then press
the controller's OFF button to
reset the controller.
fuel supplier to replenish fuel
supply.
Clear restriction.
Contact fuel supplier to replace
fuel lines with larger pipe.
Replace air cleaner element.
Replace fuse. If fuse blows again,
test generator components.
Replace or regap plug(s).
Clear air intake and enclosure air
inlets and outlets.
Adjust fuel mixture.
Add oil. Check and replace oil at
the intervals shown in the Service
Schedule.
See engine S/M.
Replace faulty LOP shutdown
switch.
Note: Check engine oil pressure
before performing test and/or
replacing LOP shutdown switch.
Tighten fuel valve connections.
Replace damaged wires.
Replace regulator or valve .
Unplug some lights or appliances
connected to the generator set.
Tighten connections to the mag
pickup. Replace damaged wiring.
Service the ignition system
according to the instructions in the
engine service manual.
Tighten connections at P2 plug.
Replace wiring if damaged.
Repair or replace components if
necessary, as indicated by tests in
Section 5.
Clear any air intake obstructions.
Readjust fuel mixture.
Note: Adjusting the fuel mixture
may void the emission
certification.
O/M = Generator Set Operation Manual
Section 3 Troubleshooting
Reference
Section 4.8
Section 5.10
—
—
Generator set
S/S, I/M
O/M
Section 5.14.2
O/M
O/M
Section 5.11
O/M
Engine S/M
Section 5.10.2
Section 5.11
—
Section 5.9
Engine S/M
Section 7
Section 5.3
Section 5
O/M
Section 5.11
31