Solis Inverter Alarm: 1029
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Solis alarm 1029: PV insulation fault or grounded PV terminal
Solis alarm code 1029 usually means the inverter has detected an insulation issue on the DC side of the solar system or has identified that a PV terminal may be grounded during operation.
Alarm code 1029 may appear as:
- PvMidIso
- PVGndRun
When this happens, the inverter may stop producing power or disconnect from the system to protect itself and maintain electrical safety.
This type of fault can sometimes be triggered by temporary moisture during rainy weather, early mornings or periods of high humidity. However, if the alarm keeps returning, it may indicate damaged insulation, deteriorated cabling, moisture ingress, grounding faults, damaged solar panels or a DC wiring issue.
Let e-Solar check your inverter and PV insulation
If the alarm appears occasionally during wet weather and clears once conditions improve, the inverter may simply be reacting to a temporary reduction in insulation resistance.
If Solis alarm 1029 keeps returning, it is worth having the system checked. Our Perth-based solar team can inspect the inverter, test insulation resistance and help determine whether the issue is related to moisture, grounding faults, damaged DC cabling, solar panels or wider system conditions.
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 attempt to test insulation resistance, disconnect DC wiring or inspect rooftop panels yourself. High-voltage solar systems require specialised equipment and training to diagnose safely.
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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Solis 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 Solis inverter models. If your inverter is showing error code 1029, 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.
Trust e-Solar for reliable Solis inverter support backed by local experience, honest advice and long-term solar care.