Kohler 17RES Manual page 30

Problem Possible Cause
Magnetic pickup
Operates
connections
erratically,
continued
Governor
adjustment
incorrect
Ignition system
Inadequate cooling
(hot engine only)
Other engine
service required
Light Voltage stability
flicker (gain) setting
Incorrect controller
High
configuration
output
voltage
Incorrect controller
voltage settings
Engine speed too
high
Loose voltage
sensing
connections
SCR module
Controller
Air intake
Lacks
power restriction,
inadequate cooling
Generator
overloaded
Spark plug(s)
Spark plug wire(s)
DSAI leads
incorrectly
connected or
disconnected
Insufficient fuel
pressure
Fuel line restriction
Fuel regulator
* ADC-RES controller only. The DC-RET controller settings cannot be adjusted in the field.
W/D = Wiring Diagram(s) (Section 7)
I/M = Generator Set Installation Manual
30 Section 3 Troubleshooting
Test
Check for loose connections to
the mag pickup.
Check governor operation.
Check controller engine speed
(frequency) adjustment. *
Test ignition system according to
instructions in engine service
manual.
Check air inlet and outlet.
See engine service manual.
Check the voltage stability (gain)
setting using the ADC controller. *
Check the controller configuration
parameters. *
Check the controller voltage
settings. *
Check engine speed using
tachometer or frequency meter.
Check connections:
stator leads 11 and 44 (1 ph) or
V7, V8, and V9 (3 ph) and
P15 controller connection.
Check wiring and connections to
the SCR module.
Check auxiliary winding fuse F1
(lead 55).
Test the SCR module using the
procedure in Section 4.8.
Check the controller settings.
Test the controller as described in
Section 3.4.
Inspect air intakes and exhaust
for obstructions.
Check air cleaner.
Reduce electrical load and check
operation.
Check spark plugs.
Check tightness and condition of
spark plug wires.
Check DSAI leads. Connect for
natural gas. Disconnect for LP.
Check fuel pressure at carburetor
outlet. Check for adequate fuel
pipe size and meter capacity for
generator set and all gas-fired
appliances.
Check fuel pipe size.
Check function of fuel regulator.
S/S = Generator Set Specification Sheet
Engine S/M = Engine Service Manual
Corrective Action
Tighten mag pickup connections.
Replace damaged wiring.
Adjust governor.
Adjust controller engine speed. *
Service ignition system according
to instructions in engine service
manual.
Clear air inlet and outlet.
Service according to instructions
in engine service manual.
Adjust the voltage stability (gain)
setting using the ADC controller. *
Adjust the controller configuration
parameters. *
Adjust the controller voltage
settings. *
Adjust engine speed on the
controller. *
Adjust governor as necessary.
Tighten connections.
Tighten connections and/or
replace wiring to the SCR module.
Replace auxiliary winding fuse F1. Section 5.13.2
Replace the SCR module and
recheck voltage.
Adjust controller settings.
See Section 3.4.
Inspect air intakes and exhaust
for obstructions.
Check air cleaner.
Unplug some lights or appliances
connected to the generator set.
Regap and/or replace plug(s).
Tighten or replace spark plug
wires.
Connect for natural gas.
Disconnect for LP.
Contact fuel supplier to replace
pipe and/or meter as required to
provide sufficient fuel supply
pressure for the generator set and
all gas-fired appliances.
Contact fuel supplier to provide
larger pipe.
Repair or replace fuel regulator.
O/M = Generator Set Operation Manual
Reference
Section 5.9
Section 5.9
Section 4.5 and
Installation Man.
Engine S/M
—
Engine S/M
Section 4.5.4
Section 4.5.1
Section 4.5.4
Section 4.5
Section 5.9
Section 7 W/D
Section 4.8
Section 4.8
Section 4.5
Section 3.4
O/M
O/M
—
O/M
Engine S/M
Section 5.12.4
Section 5.12
Section 5.12
Section 5.12
TP-6519 8/17