The Engraved aluminum punched is a generator-set controller. It is used on generator sets from Generac, including the MLT4200IF4.
| Code | Meaning |
|---|---|
| Battery Under/Over Voltage | Engine’s DC supply has fallen below or risen above its configured alarm level. |
| Check Engine Fault | A fault not recognized by the controller has been detected. |
| Low Fuel Level | Engine’s fuel level has fallen below its configured low fuel level alarm. |
| Low Oil Pressure | Engine oil pressure has fallen below its configured low oil pressure alarm level. |
| Overspeed | Engine speed has risen above its configured overspeed alarm level. |
| Underspeed | Engine speed has fallen below its configured underspeed alarm 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.