Kohler 17RES Manual page 26

Problem Possible Cause
Generator Blown fuse F2
set engine
does not
crank,
continued
Crank relay K3 on
controller circuit
board
Generator set
master switch
Poor ground (--)
connection
Starter relay
Starter
Controller
No fuel
Cranks but
does not
start
Insufficient fuel
pressure
Fuel regulator/valve Check regulator/valve operation.
* 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
26 Section 3 Troubleshooting
Test
Use a test lamp or meter to check
fuse F2.
Check connections to the
controller.
Check for a good ground
connection.
Check LED3 to verify 12VDC to
relay K3.
Check connections to the master
switch.
Test function of switch.
Test ground connection.
Check connections to the starter
relay.
Check continuity of circuit.
Check that the starter relay picks
up when 12VDC is applied at lead
71A connection.
Check starter connections.
Troubleshoot the starter. See the
engine service manual for
instructions.
Check the controller settings.
Test the controller as described in
Section 3.4.
Verify that manual fuel valve is
open.
Check fuel supply tank (LP).
Check fuel pressure to the
generator set. Verify adequate
fuel pressure and pipe size for the
generator set plus all other gas
appliances.
S/S = Generator Set Specification Sheet
Engine S/M = Engine Service Manual
Corrective Action
Replace fuse.
If fuse blows again, disconnect
the following leads. Reconnect
one at a time and attempt to start
to identify the cause of the blown
fuse:
Lead 70A at the fuel valve
Lead IGN at the ignition module
Lead 71A at the starter relay
Leads FP and FN at the rotor
Repair or replace the component
causing the blown fuse.
Tighten connections.
Replace wiring if damaged.
Tighten/repair ground connection.
If LED3 is not lit, check for 12VDC
to the board.
If LED3 is lit but relay K3 does not
operate, replace the controller
circuit board.
Tighten connections.
Replace wiring if damaged.
Replace switch.
Clean and retighten.
Tighten connections.
Replace wiring if damaged.
Replace starter relay.
Tighten connections.
Replace wiring if damaged.
Rebuild or replace starter.
Adjust controller settings.
See Section 3.4.
Open (turn on) manual fuel valve.
Contact fuel supplier to add fuel to
fuel supply tank (LP).
Contact fuel supplier to replace
fuel supply lines with larger pipe
and replace gas meter if fuel
pressure is insufficient.
Check regulator/valve operation.
O/M = Generator Set Operation Manual
Reference
Section 5.13.2.
Section 7
Section 4.6
Section 7
Section 7
Section 4.6
Section 4.2.1
Section 5.15
Section 5.15
—
Section 1.7
Section 5.15
Section 7
Section 7
Section 1.7
Section 7
Engine S/M
Section 4.5
Section 3.4
—
Section 5.12.2
Section 5.12
Section 4
TP-6519 8/17