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FAQs
Common Error Codes & SolutionsInverter Operation & Maintenance GuidelinesAdjusting Grid-Connection Voltage ParametersWiring Errors, Missing Ground Wire & Improper Lightning ProtectionInsulation Fault ("PV Isolation Low")The Inverter LCD Screen Shows NothingGrid Voltage Out of Range (AC V Outrange)PV System Not Reaching Ideal Output PowerDC Overvoltage AlarmOver-temperature ("Overtemperature" shown on the LCD)NOAH 2000 Balcony Solar Storage FAQ
FAQs

Grid Voltage Out of Range (AC V Outrange)

Why the inverter shows "AC V Outrange" when the mains voltage exceeds its grid-connection voltage range, and how to fix it.

When the mains voltage exceeds the inverter's grid-connection voltage range, the inverter's LCD shows "AC V Outrange".

Diagram of the circuit impedance between the PV system and the grid

You can resolve this as follows:

  1. Use a thicker AC output cable. The thicker the cable, the lower its impedance.
  2. Install the inverter closer to the grid-connection point. The shorter the cable, the lower its impedance.
  3. If the rural grid voltage itself exceeds the inverter's grid-connection voltage range, raise the inverter's grid-connection voltage upper limit appropriately.

Related

For option 3, see Adjusting Grid-Connection Voltage Parameters. This message corresponds to Error 129 — Grid voltage out of range.

The Inverter LCD Screen Shows Nothing

Why the inverter LCD stays blank, the possible causes, and how to troubleshoot a missing DC input.

PV System Not Reaching Ideal Output Power

The factors that can keep a PV system from reaching its ideal output power, and the checks to perform before connection.