Question about Kohler 28EOZD , 28KW-60Hz
My generator shuts down due and the code is UU (undervoltage shutdown). At times it will run for hours and other times it will run only for minutes. I have reduced the load to zero but it's still erratic. I installed a new battery and it's still the same. Do you have any suggestions where the problem might be?
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Posted on Jan 02, 2017
SOURCE: UU undervoltage kohler 20kva
call koler but ui think is meant high heat as in the thermal circut is shuting you down or low oil
could be a couple of things best bet call kohler
Posted on Aug 06, 2009
SOURCE: Code UU
Here is the code explained direct from Kohler's manual. I'd disconnect the generator load first.
UU Undervoltage Shutdown occurs if the voltage falls below 80% of the nominal system voltage for more than seconds. Check wiring and connections.
Reduce the load and restart the generator set. —
Check wiring and Check controller configuration, system voltage
and frequency (parameter UU).
Check AC voltage and adjust, if necessary. 5.7
Replace the SCR module and test voltage again. 4.9
Separately excite unit. 5.2
Check stator continuity
See web site for manual :http://www.kohlerpower.com/onlinecatalog/pdf/tp6196.pdf
Posted on Jul 11, 2010
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