FoxESS H3-12.0-E - 11. Maintenance and Troubleshooting; 11.1 Alarm List

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9. Maintenance
This section contains information and procedures for solving possible problems with the Fox inverters
and provides you with troubleshooting tips to identify and solve most problems that can occur.
9.1 Alarm List
Fault Code Solution
Grid Lost Fault
Grid is lost.
• System will reconnect if the utility is back to normal.
• Or seek help from us, if not go back to normal state.
Grid Volt Fault
Grid voltage out of range.
• System will reconnect if the utility is back to normal.
• Or seek help from us, if not go back to normal state.
Grid Freq Fault
Grid frequency out of range.
• System will reconnect if the utility is back to normal.
• Or seek help from us, if not go back to normal state.
PLL_ OverTime
Three-phase system access single-phase AC.
• System will reconnect if the utility is back to normal.
• Or seek help from us, if not go back to normal state.
10min Volt Fault
The grid voltage is out of range for the last 10 Minutes.
• System will reconnect if the utility is back to normal.
• Or seek help from us, if not go back to normal state.
SW Inv Cur Fault
Output current high detected by software.
• Disconnect PV, grid and battery, then reconnect.
• Or seek help from us, if not go back to normal state.
DCI Fault
DC component is out of limit in output current.
• Disconnect PV, grid and battery, then reconnect.
• Or seek help from us, if not go back to normal state.
HW Inv Cur Fault
Output current high detected by hardware.
• Disconnect PV, grid and battery, then reconnect.
• Or seek help from us, if not go back to normal state.
SW Bus Vol Fault
Bus voltage out of range detected by software.
• Disconnect PV, grid and battery, then reconnect.
• Or seek help from us, if not go back to normal state.
Bat Volt Fault
Battery voltage fault.
• Check if the battery input voltage is within the normal range.
• Or seek help from us.
SW Bat Cur Fault
Battery current high detected by software.
• Disconnect PV, grid and battery, then reconnect.
• Or seek help from us, if not go back to normal state.