Fronius inverters

Fronius commenced operation in 1945 as a family business in Austria, producing welding transmitters and battery chargers. Since then, they have grown into a global enterprise. In 1995, they added solar inverters to their suite of premium products. Fronius inverters are warrantied for a minimum of five years, but can be up to twenty years depending on the original installer.

The Fronius range includes the following models:

  • Fronius IG
  • Fronius IG Plus
  • Fronius Galvo
  • Fronius Primo
  • Fronius Symo

Our experience of Fronius is that they produce exceptionally reliable inverters. In the unlikely event of a fault, contact us for assistance.

Fault codes

State 104, 302 or 443 – these codes may indicate a faulty circuit board

State 4657 or 461 – these codes may be resolved with a simple software update

Other codes or even a blank screen are also possible.

Solar PV repair enquiry form

For repairs to your solar PV system, please call us on 01772 311016 or complete this form and we will contact you.
Please note that we are a small company in North West England. We can assist with replacement parts anywhere in the UK but can only offer a call out service locally.
e.g. Are there any fault codes on the inverter screen? Any unusual noises or smells?
Your inverter model number and serial number can usually be found on a label on the side or underside of your inverter.