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 (the first two are no longer produced but many are still in service):
- Fronius IG
- Fronius IG Plus
- Fronius Galvo
- Fronius Primo
- Fronius Symo
Our experience of Fronius is that they produce exceptionally reliable inverters. We rarely see a faulty Fronius inverter. In the unlikely event of a fault, contact us for assistance.
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.
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