Question about Kohler 20RES 20 kW L.P./N.G. Genset
Generator indicates UU on display
Posted by Anonymous on
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Posted on Jan 02, 2017
Could be the battery voltage. If your battery is not charging properly, the controller on the unit can do some funky things! Exactly how long does it run for? Is this in auto or manual mode?
Posted on Sep 04, 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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