Fronius Inverter Error Code 240 / 241 / 242 / 243
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Fronius error 240 / 241 / 242 / 243: Arc detection
Fronius error code 240, 241, 242 or 243 usually means the inverter’s arc detection has triggered. Arc detection is a safety feature designed to help identify possible electrical arcing within the solar system.
This may happen if there is an issue with the solar panels, DC cabling, connectors, isolators or another part of the PV system. It may also appear after storm activity, water ingress, impact damage or other events that affect the solar array.
Arc detection faults should be treated seriously, especially if the code keeps returning or your system has stopped producing as expected.
Let e-Solar check your inverter and PV system
If Fronius error code 240, 241, 242 or 243 appears, do not ignore it or attempt to inspect the panels, DC cabling or isolators yourself.
Our Perth-based solar team can inspect your inverter and PV system to help determine whether the issue is linked to panel damage, DC cabling, connectors, isolators, storm damage, moisture ingress or another system fault.
Contact e-Solar and let us know:
- The exact error code on the screen or app
- When the code appears
- Whether your solar production has dropped
- Your inverter model, if you know it
Do not open the inverter or attempt electrical testing yourself. If the issue is persistent, a qualified technician may need to inspect the DC side of the system, test the solar array and confirm whether it is safe to resume normal operation.
Get In Touch Today
Not sure what the error code means? Send us a quick message with a photo of your inverter screen. We’ll help identify the issue and guide you towards the safest next step.
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Fronius Inverter Repairs and Fault Support
We understand that every solar system is different, which is why our repair and fault-finding services cover a wide range of Fronius inverter models. If your inverter is showing error code 240, 241, 242, or 243, our experienced technicians can help determine whether the issue is linked to grid voltage, inverter settings, site wiring or wider network conditions.
With over 22 years supporting Perth solar systems, e-Solar has seen all kinds of inverter faults and performance issues. We’ll assess your system safely, explain what the code means, and recommend the right next step to help get your solar running properly again.
e-Solar supplies Fronius GEN24 Primo and Fronius GEN24 Symo inverters, while also supporting a wide range of existing Fronius systems across Perth.
Trust e-Solar for reliable Fronius inverter support backed by local experience, honest advice and long-term solar care.