What you will see
- An internal fault name and the inverter stops
Why it happens
Grid spikes, PV voltage problems or internal hardware faults.
Diagram
What to do with internal faults
- 01Write down the exact code
- 02Switch off, wait, switch on once
- 03Comes back?
- 04Call with code and serial
Examples:
TzFaultBusVoltFaultGrid relayInternal comms
What you can check yourself
- Write down the fault
- Restart once using our safe restart guide
What not to do
- Do not restart repeatedly
- Do not open the inverter
When to call us
- Check PV voltage and wiring
- Update firmware
- Warranty claim
Repairs
We diagnose Fronus faults and help with warranty in Faisalabad and Lahore.
Send us
fault name, screen photo and serial number