Onan 4 fault code — Generator
Applies to: QG 7000i DF HGLCA Spec A
What 4 means
The Cummins Onan QG 7000i DF HGLCA operator manual list Code 4 as Over Crank.
Owner-safe checks
- Stop repeated start attempts.
- Check fuel level or LP level from normal owner access.
- Record whether priming was attempted before the fault.
Service-only work
- Internal generator electrical output, inverter, controller, sensors, fuel system, ignition, AC circuit, and engine diagnosis belongs to Cummins service or a qualified generator technician.
Safety boundary
Generators can produce carbon monoxide, hot surfaces, fuel hazards, moving-part hazards, and lethal voltage. Shut the generator down and do not open energized compartments unless qualified.