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www.youtube.com/watch?v=CT9u64dZna0
Apr 28, 2012 - Uploaded by Jeremy vanEyk
Brand new Kohler Generator Test cycle issue. ... Oh, and Mike, good call on the carb--that happens on some 20RES models. ...Indicates Locked Rotor (Lr). ... I'm on my second 20 RES-L,home depot swapped out the 1st one. ... Kohler 20KW RESA Whole House Standby Electrical Generator - Duration: ...
OC is Over Crank which generally means it cranked and cranked and failed to start. Turning the switch off and on again is the way to clear the fault. How long is it taking to start whilst cranking? It should start within 8 seconds
If it won't start in manual, you have a short and/or a bad control board. Make sure battery polarity is correct, did you disconnect battery charger before removing old battery? If not charger can push DC volts over 20V and can damage control board.
Check the inlet fuel pressure, on exervise there is no load, when power is out it is loaded and demands more fuel. Also check for bugs blocking gas regulators vents etc
I finally solved the intermittant starting problem on my Kohler 12 RES by replacing the strater and the starter relay. I was also experiencing the occassional OC indication, red blinking LEDs on the ATS, and intermittent non-starts during the weekly exercises. The problem happened during power outages a couple times also. If I flipped the start switch between auto and run quickly the generator would occasionally start. Once started, the generator runs fine. I ordered a new starter, which included the starter solenoid. By the way, don't worry about the genuine part thing..the old starter was a Delco made overseas. I ordered a new starter online for $85 (6744N) and it was indentical to the genuine Kohler starter. Replaced the starter and it improved the problem but did not totally solve the intermittent starting. Ordered the starter relay (GM49746) replaced it and the problem is solved.
The 12RESL has no user setup. That's part of lower cost on the DC 2200 controller versus an ADC 2100 or ADC-RES controller that came with the 12 / 17 / 18 RES models. Here is a link for the ADC 2100 Operation / Installtion manual though. http://www.scribd.com/doc/60318571/Kohler-8-5-12RES-Install
Is the outside air temp cold. These generators will backfire if it is real cold and if the propane pressure is low. It is suppose to be 11 to 12 inches of water colume at the generator fuel input. drygwals
Check battery volatge while you are cranking engine if voltage drops below 9 vdc you have a bad battery. If it doesn't you probable have a bad starting solenoid or a bad ground at the starting solenoid.
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