Selmahotrod
Member
My Onan 4000 runs great until I turn on A/C. After about 3 minites of running it shuts off and gives code 38. That is an overload code and the AC is all I got on. I dont know where to start. Any ideas?
Yes, I made sure it was not overfilled. It is on the center off stick. I just bought the motor home so I dont know the history of any
Everything elese works good.Plenty of gas in tank?
When last time filters and plug change?
Have u tried something besides AC that doesn't draw as much load as AC?
Frequency is adjusted by engine RPM (there a screw on the linkage). Voltage is not adjustable on a J spec 4000 generator. If it is a H spec, it is adjustable (see the operator manual)How do you adjust voltage and frequency?