The black box below the solar inverter

What are common solar inverter faults?

Learn how to identify and repair common solar inverter faults like overcurrent, undervoltage, islanding, overheating, and faulty communication. Like any piece of equipment, solar inverters can experience faults and errors that can disrupt the operation of the solar system.

What is a solar inverter?

A solar inverter is a critical component of a photovoltaic system, converting the direct current (DC) electricity generated by the solar panels into alternating current (AC) electricity that can be used in homes and businesses. The inverter display shows important information such as error codes and operational status.

What causes a solar inverter error?

Solar inverter error faults can arise from various sources, including issues with the inverter itself, the solar panels, or the grid connection, and can be categorised into different types: Temporary faults: Often caused by grid voltage or frequency fluctuations, these faults can usually resolve automatically as the inverter adjusts to the changes.

What happens if an inverter is undervoltage?

For undervoltage errors, an inverter repairer will need to check the condition of the battery and replace it if necessary. If the battery is in good condition, they check the panel’s connections to ensure that they are secure and not damaged.