The M150 is a generator-set controller. It is used on generator sets from Doosan and Volvo Penta, including the G33.
Used across brands: Doosan, Volvo Penta
Also fitted to: Volvo Penta G550.
| Symptom | Cause | Remedy |
|---|---|---|
| Black exhaust smoke | Insufficient air supply; Faulty injection timing | |
| Blue or white exhaust smoke | Engine coolant temperature is too low; Lubricating oil level too high; Faulty injection timing | |
| Engine coolant temperature too high | Too little coolant; Radiator blocked; Circulation pump defective; Defective / incorrect thermostat; Defective temperature gauge / sensor; Faulty injection timing | |
| Engine difficult to start | Lack of fuel; Fouled fuel filter; Air in the fuel injection system; Water / contaminants in the fuel; Preheating insufficient; Starter element defective / not connected; Fault in the GAC unit (generating set engines) | |
| Engine does not reach correct speed at wide open throttle (WOT) | Lack of fuel; Fouled fuel filter; Air in the fuel injection system; Water / contaminants in the fuel; Insufficient air supply; Engine coolant temperature too high; Engine overloaded; Excessive back pressure in exhaust system; Fault in the GAC unit (generating set engines) | |
| Engine knocks | Lack of fuel; Fouled fuel filter; Air in the fuel injection system; Water / contaminants in the fuel | |
| Engine runs unevenly | Lack of fuel; Fouled fuel filter; Air in the fuel injection system; Water / contaminants in the fuel; Insufficient air supply; Engine coolant temperature too high; Fault in the GAC unit (generating set engines) | |
| Engine starts but stops again | Lack of fuel; Air in the fuel injection system; Water / contaminants in the fuel; Insufficient air supply; Preheating insufficient; Starter element defective / not connected | |
| Engine vibrates | Defective engine mounting; Worn clutch | |
| Engine will not start | Fuse off | Replace |
| Fuel consumption too high | Bad quality fuel | Change fuel |
| High fuel consumption | Insufficient air supply; Engine coolant temperature is too low | |
| Low oil pressure | Lubricating oil level too low; Blocked fuel filter | |
| No or poor charging | Loose connection / open-circuit; Generator drive belt slipping | |
| Not enough power | Wrong viscosity grade of oil | Change oil |
| Oil consumption too high | Too much oil in engine | Drain to correct level |
| Oil pressure too low | Not enough oil in engine | Add oil |
| Overheating | Not enough coolant in system | Add coolant |
| Starter motor not turning (or turning slowly) | Discharged battery; Loose connection / open-circuit; Fuse tripped; Defective ignition switch / starter button; Defective start relay; Defective starter motor / solenoid; Water in the engine | |
| Too much black or gray smoke | Bad quality fuel | Change fuel |
| Too much white or blue smoke | Too much oil in engine | Drain to correct level |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.