What you will see
- 2011 after installation or roof work
- One input shows no power
Why it happens
Swapped string cables at the inverter.
Diagram
One string connected the wrong way
Correct
String+ to +, − to −
→InverterUses it
Reversed
StringSwapped
→PV1–PV42011
Leave the DC switch to an engineer with a meter.
What you can check yourself
- Note the cause ID and any recent work
What not to do
- Do not turn the DC switch off or pull connectors while current flows
When to call us
- Wait for safe current, then correct polarity
- Recheck all strings
After roof work
If 2011 appeared after another installer's work, our Faisalabad and Lahore engineers can correct it.
Send us
the alarm with cause ID