Kohler 20RESC User Manual

TP-6805 8/1584 Section 5 Troubleshooting
Problem ReferenceCorrective ActionTestPossible Cause
Erratic
operation
Air cleaner clogged Check air filter element. Replace element. O/M
Spark plug(s) Check spark plug condition and
gap.
Replace or regap plugs. O/M
Spark plug wire(s) Check spark plug connections
and wires.
Tighten connections. Replace
damaged spark plug wires.
Engine S/M
DSAM leads
incorrectly
connected or
disconnected
Check DSAM/ignition timing lead
connection.
Connect for natural gas.
Disconnect for LP.
Section 6.11.2
Fuel line restriction Check fuel lines.
Check fuel pipe size.
Clear restricted fuel lines.
Contact fuel supplier to install
larger diameter pipe.
Section 6.11.3
Fuel mixture
adjustment
incorrect
Use oxygen sensor to check fuel
mixture.
Adjust fuel mixture. Section 6.11
Governor
adjustment
incorrect
Check governor operation.
Check controller engine speed
setting. *
Adjust governor.
Adjust engine speed setting on
controller. *
Section 6.8
Section 4.4
Ignition system Test ignition system according to
instructions in engine service
manual.
Service ignition system according
to instructions in engine service
manual.
Engine S/M
Inadequate cooling
(hot engine only)
Check air inlet and outlet. Clear air inlet and outlet. —
Other engine
service required
See engine service manual. Service according to instructions
in engine service manual.
Engine S/M
High
output
voltage
Incorrect controller
settings
Check genset model, engine
model, system voltage, and other
controller settings. *
Adjust the controller settings. * Section 4.4
Incorrect voltage
calibration
Check the voltage calibration.* Adjust the voltage calibration. * Section 4.8
Loose voltage
sensing
connections
Check connections:
stator leads 11 and 44 and
P2 controller connection.
Tighten connections. Section8W/D
W/D = Wiring Diagram(s) (Section 8) 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.

Kohler 20RESC Specifications

General

Rated Output (Gasoline)	20 kW
Rated Output (LPG)	18 kW
Voltage	120/240 V
Frequency	60 Hz
Fuel Type	Gasoline, LPG, Natural Gas
Starting System	Electric
Warranty	5 years limited
Dimensions	48.5 in L x 29 in H