Sungrow Code 10 Grid Outage | Faisalabad, Lahore

Sungrow inverter shows Grid Power Outage (code 10)

Short answer

Code 10 means the Sungrow inverter cannot see the grid. During load-shedding this is normal: an on-grid inverter must switch off when the grid is off, so it does not send power into lines that line staff are working on. If code 10 appears while your house has WAPDA power, the inverter's AC breaker may be off or a connection between the inverter and the board may be loose.

What you will see

Code 10 during load-shedding on an SG-RS or SG-RT on-grid inverter
Code 10 while the house has grid power
Inverter starts again a few minutes after the grid returns

Why it happens

On-grid inverters are built to stop the moment the grid disappears. This is a safety rule, not a fault. Only a hybrid (SH series) with a battery and backup wiring can keep selected loads running.

If the grid is present but the inverter still reports an outage, it is not receiving the grid at its AC terminals: a tripped or switched-off breaker, a loose connection or a wrong terminal.

Diagram

Code 10: normal or a problem?

Load-shedding

GridOff

→

On-grid inverterStops by design

Expected. Line staff must not get solar power in the wires.

Grid is on in the house

GridOn

→

AC breakerOff or loose

→

InverterCode 10

Needs a check of the breaker and AC connections.

Only a Sungrow SH hybrid with a battery and backup wiring keeps power on during outages.

What you can check yourself

Check whether the rest of the house has grid power
Check that the inverter's AC breaker in the board is ON
After the grid returns, give the inverter a few minutes before deciding it is stuck
See our article on on-grid inverters stopping during load-shedding

What not to do

Do not bridge or bypass anything to make an on-grid inverter run during load-shedding
Do not connect a generator to the inverter output

When to call us

Check AC terminals at the inverter for correct live and neutral and firm connection
Check the AC breaker and any voltage protector in line
Advise on adding a Sungrow hybrid or battery if you need backup

Load-shedding in Punjab

Many on-grid systems in Faisalabad and Lahore show code 10 every load-shedding hour, and that is expected. If you want backup, our teams can survey your system for a hybrid or battery upgrade.

Send us

a screenshot of code 10 with time, whether the house had grid power, and a photo of the inverter breaker