What you will see
- Warning 401 or Error 306–308
- House consumption wrong or zero in ShinePhone
- Export limit not working
Why it happens
The meter or SP-CT tells the inverter what the house uses and exports. A loose cable, meter switched off, CT too far away or wired the wrong way breaks this.
Diagram
The inverter needs to see the house
Linked
Meter / SP-CTReading
→InverterKnows the load
Lost or reversed
Meter / SP-CTOffline or LN reversed
→Inverter401 / 306–308
Solar keeps generating, but export limit and consumption figures go wrong.
What you can check yourself
- Check the meter display is on
- Note whether it started after a meter change or electrical work
What not to do
- Do not open the meter box or move the CT
When to call us
- Check meter and CT wiring and direction
- Re-pair the SP-CT within range
- Verify readings after the fix
After a meter change
This often follows a FESCO or LESCO meter replacement. Our teams recheck the meter and CT.
Send us
screenshots of the power flow and alarm