Kohler 20RESC Installation And Operation Instruction

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7 Additional Troubleshooting
If the paralleling system does not operate as expected, check the items in the following charts. Verify that both
generator controllers have blue circuit boards. Section 4 also includes some troubleshooting tips for problems that
may arise during the initial setup.
Breaker will not
close in RUN.
Check whether the other
generator set is connected to the
paralleling bus.
Other breaker is closed. Stop the
other generator set.
YES
NO
Check whether the generator sees
bus voltage (L2-L3 in SiteTech)
above 25% of rated voltage.
YES
Auto-discovery is not complete.
Initiate auto-discovery. This
generator must be running in RUN
mode (not AUTO). The other
generator must be stopped with
the controller in OFF mode (press
OFF button).
NO
Bus sensing is not connected or is
connected incorrectly.
Check wiring between both
generators and the Automatic
Paralleling Module.
Figure 28 Tr oubleshooting: Breaker Will Not Close
SiteTech indicates that both
engines are under load, but the
ATS has not transferred.
Transfer ATS and start each
generator individually. Does the
metering read positive power with
load on the generator?
Both generators are
metering accurately, the
load indicated in SiteTech
must be due to electrical
noise. Continue to
commission the system.
YES
NO
The metering on this generator is
backwards.
The metering on this generator
is correct. Start the other
generator and allow it to close
to the bus, then stop this
generator. Check that the other
generator is reading positive
power.
NO
Select a different model number for the generator, then re-select the
correct model number. This will clear the CT direction flag and allow the
generators to re-determine CT direction.
YES
The metering on the other generator is backwards. Select a different
model number for the other generator, then re-select the correct model
number. This will clear the CT direction flag and allow the generators to
re-determine CT direction.
Figure 29 Troubleshooting: ATS Has Not Transferred

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