These are the basic steps to shutting down and restarting a string inverter. The steps can be a bit different, depending on your equipment configuration:
With an error light on, your inverter has ceased to work. You can perform a system reset to try and restore normal operations. The following steps apply only to string inverters.
- Turn off the circuit breaker in the main service panel. The circuit breaker should be clearly marked as “solar” or “solar PV” or similar.
- Some installations will also have an AC Disconnect which should be switched off.
- If a DC Disconnect is present, switch it off.
- Some inverters will have an integrated DC Disconnect switch. Turn it off now.
- The inverter is now isolated from AC and DC voltage. Wait at least 5 minutes to allow the inverter to drain energy completely.
- To restart, turn on the AC circuit breaker and any AC Disconnects. This allows the internal AC circuits to prepare for the DC input.
- Turn on the DC Disconnect (if present) and the inverter DC Disconnect (if present).
- The inverter will begin the power-up internal checks and re-connect to the Grid in 5 minutes.
If the error condition persists, contact us for a troubleshooting session.
Click through these pictures to help you identify solar photovoltaic disconnects and switches when you are working on the solar system.
