Not every fault means the product must be replaced. Many inverter and controller issues are connected to wiring, battery condition, overload, PV input or installation environment. A structured check saves time for both buyer and support team.
Where this guide helps
Use this article when a customer reports no output, alarm, low charging, unexpected shutdown or unstable operation.
What to confirm before choosing a model
- Record the exact symptom, display message or alarm behavior.
- Check battery voltage and battery condition first.
- Inspect cable polarity, terminal tightness and fuse status.
- Disconnect non-essential loads and test step by step.
- Take clear photos of wiring, label and installation environment.
Common mistakes to avoid
- Replacing the unit before checking battery voltage.
- Testing with multiple unknown loads connected.
- Ignoring loose terminals or undersized cables.
- Sending support requests without model photos or symptom details.
How Gerixi Solar supports the decision
Gerixi Solar support communication is easier when partners collect structured information before asking for diagnosis.
Practical next step
Create a troubleshooting photo checklist for your team so every case includes model label, wiring, battery and display information.
