SOFAR IslandFault ID008 | Faisalabad, Lahore

SOFAR inverter shows IslandFault (ID008) during load-shedding

Short answer

ID008 IslandFault means the SOFAR inverter detected that the grid had gone and switched itself off. This is anti-islanding protection, required so solar power does not flow into lines that staff may be working on. On a KTLM or KTLX on-grid inverter it is expected during load-shedding. It restarts on its own when the grid returns.

What you will see

ID008 during every load-shedding hour
Inverter restarts a few minutes after the grid returns

Why it happens

On-grid inverters must stop the moment the grid disappears. Only a hybrid with a battery and a backup (EPS) circuit, such as SOFAR HYD or ESI, can keep selected loads on.

Diagram

IslandFault is a safety stop

01Grid goes off
02Inverter detects it
03Stops feeding (ID008)
04Grid returns
05Inverter checks and reconnects

Only a hybrid with a battery and backup circuit keeps loads on.

SOFAR KTLM and KTLX on-grid inverters.

What you can check yourself

Confirm the grid was off at the time
Give the inverter a few minutes after the grid returns
Read our article on on-grid inverters stopping during load-shedding

What not to do

Do not bypass anything to make an on-grid inverter run during load-shedding

When to call us

If ID008 appears while the grid is on, check AC wiring and the breaker
Advise on a hybrid or battery upgrade if you need backup

Load-shedding hours

On-grid SOFAR systems across Faisalabad and Lahore log ID008 every outage. If you want backup, we can survey your system for a hybrid upgrade.

Send us

Event List photo with times and whether the house had grid power