Every inverter makes some noise — switching components and cooling fans both produce sound. The trick is knowing which noises are routine and which mean a call to support.
Normal sounds
- A soft electrical hum that tracks load
- Fans spinning up under heavy draw or heat
- Faint relay clicks when switching between solar, battery and grid
Sounds to investigate
- Loud crackling or sizzling — power down and call us
- Grinding or rattling fans (dust or a failing bearing)
- Repeated buzzing paired with an error code or shutdown
When in doubt, note the sound and any display code and contact support. A two-minute check now can prevent an expensive failure later.