Standby Generator Troubleshooting: Common Problems
A standby generator can fail to start or transfer for many reasons. Start with the manufacturer's status indicators and avoid bypassing safety controls.
Common reasons a system needs attention
- Weak or failed starting battery
- Low or degraded engine fluids
- Fuel-supply interruption
- Controller alarms or lockouts
- Overdue maintenance
- Transfer-system or electrical issues
Use the model-specific manual
Error codes and reset procedures vary by manufacturer and model. Follow the manual rather than guessing at a code meaning.
Stop if troubleshooting requires unsafe electrical or fuel work
Do not bypass interlocks, open energized equipment or improvise generator connections. Electrical and fuel-system work can create serious hazards.