GoodWe Inverter Error Code 11
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GoodWe error 11: DC BUS high
GoodWe alarm 11 usually indicates that the internal DC bus voltage is too high, the PV voltage exceeds the inverter’s maximum rated voltage, or PV current is leaking to ground. When this occurs, the inverter may halt operation to protect internal components and prevent damage.
This does not always indicate a complete inverter failure but should be taken seriously, as sustained DC overvoltage can stress inverter circuitry and other connected system components.
Let e-Solar check your inverter DC bus and PV connections
Power off the inverter before inspection (turn off the AC output and DC input switches) and follow the safety label instructions. After powering on, e-Solar can verify the DC bus voltage, confirm the PV voltage and current are within safe limits, and measure resistance between PV terminals and ground to ensure insulation is correct.
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
Our team can determine whether the alarm is caused by temporary conditions, PV array configuration, DC bus overvoltage, or grounding issues, and guide you to safely 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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GoodWe 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 GoodWe inverter models. If your inverter is showing error code 11, 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 GoodWe inverter support backed by local experience, honest advice and long-term solar care.