The APM402 is a generator-set controller. It is used on generator sets from Discovery Energy and Kohler, including the 100ERESD, 100REOZJF, 100REZGD and 100RZGD.
Used across brands: Discovery Energy, Kohler
Also fitted to: Discovery Energy APM402 Controller.
| Code | Meaning | Remedy |
|---|---|---|
| 32 | High Coolant Temperature | |
| 32A | Emergency Stop | Reset the emergency stop switch. |
| 40 | Pre High Coolant Temp. | |
| 41 | Pre Low Oil Pressure | Check and adjust oil level or replace oil pump. |
| 48 | Emergency Stop | |
| 62 | Low Battery Volts | |
| 63 | Low Fuel | Refuel the generator set. |
| DCB1 | Relé de falla común DCB1 | Llene el sistema de enfriamiento antes de encender el calentador de bloque. Ponga en marcha el motor hasta que este se caliente y llene el radiador para purgar el aire del sistema antes de energizar el calentador de bloque. |
| DCB2 | Relé de falla común DCB2 | |
| o | Low engine oil level | |
| o | Low fuel level (diesel models) | |
| o | Low fuel pressure (gas models) |
| Symptom | Remedy |
|---|---|
| Battery short circuits. | Disconnect or reconnect generator before servicing the equipment. Jewelry should be removed before servicing the equipment. Use tools with insulated handles. Remove the negative (-) lead first when disconnecting the battery. Reconnect the negative (-) lead last when reconnecting the battery. Never connect the negative (-) battery cable to the positive (+) connection terminal of the starter solenoid. |
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.