What you will see
- After installation or roof work
Why it happens
Swapped DC cables.
Diagram
Wired the wrong way
Correct
String+ to +, − to −
→InverterUses it
Reversed
StringSwapped
→InverterCode 25
Leave the DC side to an engineer with a meter.
What you can check yourself
- Note recent work
What not to do
- Do not touch DC wiring
When to call us
- Correct polarity safely
After roof work
We correct SAJ DC wiring.
Send us
alarm photo