Question about Onan Cummins 2.8 KV-FA/6050 RV QG 2800 EVAP 2800K C.A.R.B Compliant Ga

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Onan 2800 generator sops when a/c is turn on

Onan 2800. runs find until a/c is turn on gen stops a/c is only then connected

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While you didn't indicate the btus of the HVAC I assume it worked before? What you are describing sounds like the engine isn't making horsepwer. A 2800 is a small unit that a HVAC and some lights is about all it can stand. The HVAC takes about 6 x current to start it, than it does to run it. If this inrush is high and the generator engine isn't producing full HP then it will shut off and die on under frequency. I would recommend having and engine leakdown test done (not a compression test, as that doesn't tell the whole story. This will ensure all valves and rings are mechanincally in good shape, then try a basix tune up, plugs filters etc.

Posted on Nov 14, 2013

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