Path-Q Solar
How can I tell whether repeated inverter shutdowns are caused by the grid or the equipment?
Answer
Compare shutdown timestamps and error codes with utility outages, voltage or frequency events, weather, and other site loads. Grid-related shutdowns often correlate with external disturbances and may affect multiple systems, while equipment-related faults may recur under similar internal conditions even when the grid is stable; a qualified technician should confirm the cause.
Key points
- Save the inverter event log rather than relying only on the app's outage summary.
- Check whether all inverters stop together or only one unit stops.
- Look for repeated overvoltage, undervoltage, frequency, temperature, insulation, or communication indications.
What it depends on
- Inverter event codes and time accuracy
- Utility outage or power-quality information
- Whether shutdowns affect one or multiple devices
- Temperature, ventilation, wiring, and load conditions
Risks and trade-offs
- Grid-related trips may be required protective behavior and should not be bypassed.
- Unnecessary inverter replacement is costly if the underlying problem is utility voltage, wiring, or configuration.
Information you may need
- Complete event logs with timestamps
- Utility outage and power-quality records if available
- System configuration and recent service history
- Pattern of affected inverters or strings
Your next step
What to do next
Export the event history and request a technician to correlate it with site electrical measurements and utility conditions.
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SQ02334