The Power Zone Pro is a generator-set controller. It is used on generator sets from Generac, including the SG035, SG045, SG045 | 4.5L | 45 kW and SG050.
| Code | Meaning | Remedy |
|---|---|---|
| H01 | Low Coolant Level | Add coolant to the proper level. |
| H02 | High Coolant Temperature | Reduce load or allow engine to cool. |
| H03 | Low Engine Oil Pressure | Check and add oil if necessary, or replace oil filter. |
| H04 | Overspeed Shutdown | Reduce load immediately to prevent engine damage. |
| H05 | Overcrank Shutdown | Check fuel system and ignition components. |
| H06 | RPM Sensor Loss Shutdown | Check RPM sensor connections and replace if necessary. |
| H07 | Low Fuel Pressure Warning | Check fuel system for leaks or blockages. |
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.