What you will see
- Code 84 alarm
- App shows strange consumption or export figures
- Zero-export or battery charging does not behave as expected
Why it happens
The CT has a direction. If it is clipped on the wrong way, or the meter's input and output wires are swapped, the inverter gets mirrored readings and makes the wrong decisions.
Diagram
The sensor has a direction
CT the right way
Import shows as import, export as export. Export limit works.
CT reversed
Readings are mirrored: odd consumption, export limit does not work. Code 84.
What you can check yourself
- Compare the app with your utility meter reading over a day
- Note whether the alarm appeared after a meter change or electrical work
What not to do
- Do not open the meter box or move the CT yourself
When to call us
- Check CT direction and meter wiring
- Check the existing-inverter power setting if another inverter shares the system
- Verify readings after correction
After a meter change
This often appears after FESCO or LESCO replaces the meter and wiring gets moved. Our teams can recheck the CT and meter for you.
Send us
screenshots of the power flow screen and code 84