Solar Inverter Showing Fault
The solar inverter displaying an error code, red light, or not operating, stopping power generation.
What Is Causing This?
- 1Grid fault detected causing the inverter to shut down
- 2Internal component failure
- 3Overheating due to poor ventilation around the inverter
How Urgent Is This?
This should be fixed in the coming weeks. Leaving it may allow the problem to worsen and cost more to repair.
What Needs to Be Done
A solar installer will read the error code, reset the inverter, and replace it if the fault persists. Inverter warranties typically cover 5 to 10 years.
How Much Will It Cost?
National average estimate
Labour: £627 – £1,500 | Materials: £1,833 – £5,010
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Ask a QuestionPlanning Permission Guidance
Some fixes for this problem may require planning permission or building regulations approval. Check if your project needs permission:
How to Prevent This
Ensure the inverter has adequate ventilation. Keep it away from direct sunlight. Monitor for error codes and report them early.
Related Problems
Other Solar Panel Installer Problems
The solar panel system showing zero or very low generation despite sunny conditions.
Pigeons or other birds building nests under the gap between solar panels and the roof.
Visible crack or damage to the glass surface of a solar panel, which may reduce output.
Solar panels producing noticeably less electricity than in previous years or compared to expected levels.