Onan Generator Error Codes Codes from the Onan Generator Troubleshooting Manual Error Description Code 1 Engine Over Temperature Code 2 Low Oil Pressure Code 3 Service Check Code 4 Over Crank Code 12 Over Voltage Code 13 Under Voltage Code 14 Over Frequency Code 15 Under Frequency Code 19 Governor Actuator Overload Code 23 Low Oil Pressure Cutoff Switch Code 27 Voltage Sense Error Code 29 High Battery Voltage Code 31 Overspeed Code 32 Low Cranking Speed Code 35 Control Card Failure Code 36 Engine Stopped Code 37 Invalid Generator Set Configuration Code 38 Over Current (Field Overload) Code 41 Generator Rotor Code 42 Processor Code 43 Processor Fault Code. These critters can be the source of issues by building nests or chewing through wires. Additionally, check the ground wire to make sure it is firmly attached at both ends.Īlso, there is no sure way to escape and protect your RV from rodents and bugs. Have you checked the circuit breaker? There is typically one on the generator, as well as one within the RV. What to do if My Onan Generator Starts then Shuts Down Check these before calling a professional. In general, the following Do-it-Yourself steps may help you resolve your problem. The diesel-powered Blink Code list includes many issues you may experience, but the common fault code 36 is an issue that can have several causes from low fuel to some serious mechanical issues. Newer Onan diesel-powered RV generators have fault codes that will display on the unit.
Gas-powered unit owners should check the Onan RV generator manual for trouble-shooting guides. If the Onan generator starts and then shuts down, there are several trouble-shooting steps you can take to identify the issue. Gas RVs will have the generator mounted in a side compartment.
Most diesel operated RVs will have the generator mounted in a pull-out on the front, as the diesel motor is in the rear. The generator can be in different places on an RV. Most Onan RV generator issues can be solved before calling in a professional mobile or dealer RV tech. Regular generator maintenance will help the generator run smoothly, but most importantly it will identify any issues before you need it to power the RV. RV non-portable generators (those permanently installed in an RV) should be run regularly to ensure that they work. Effective in 2017, the brand was changed to reflect the Cummins name across the board.Īlthough well designed and built, like any other mechanical part, the Onan generator can develop issues over time. Today, Onan RV generators are most often found in RVs with Cummins engines, as the Onan Corp became a fully owned subsidiary of Cummins Inc in 1992.
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