The fault codes 09, 53, and 58 on a 5500W solar inverter are typically related to issues with the inverter’s components.

The fault codes 09, 53, and 58 on a 5500W solar inverter are typically related to issues with the inverter’s components. Here’s what you can do to check for the source of the problem:

1. Check the IGBTs (Insulated Gate Bipolar Transistors): These are high-power electronic components that can fail if they are subjected to overloading or over-temperature conditions. Look for any signs of damage, such as burn marks, broken or cracked packaging, or discoloration.
2. Check the MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors): These are power switching components that can also fail due to overloading or over-temperature conditions. Look for any signs of damage, such as burn marks, broken or cracked packaging, or discoloration.
3. Check the DC fuse: The DC fuse is designed to protect the inverter and its components from overloading or short-circuits. Check whether the fuse has blown by visually inspecting it. If the fuse is blown, it will need to be replaced.

It is important to note that checking these components requires knowledge of electrical systems and experience in working with high-voltage electronics. If you are not familiar with these components or do not have the proper training and equipment to check them, it is recommended that you seek the assistance of a qualified technician. Or you can contact us for help 🙂