All brands String inverter systems fault codes
One inverter in a loft or garage with panels wired in series into it. The DC string voltage is the hazard here — GivEnergy’s ceiling for a string on their own equipment is 580 volts DC, and Fox ESS’s for their H1 hybrids is an open-circuit voltage under 600 volts, which gives the scale.
Codes on the String inverter systems follow the same All brands scheme as the rest of the range. Where a code behaves differently on this generation, the code page says so.
All brands fault codes
Every published All brands code. Open a code to see which models and years it applies to.
- Inverter shutting down in the middle of the dayUsually the grid rather than your system. Inverters must disconnect when mains voltage goes outside the G98 protection settings, and exporting solar is what pushes it there.Usually simple to fix
- Generating less than expectedThe rated figure is a laboratory number a British afternoon rarely supplies. Two published non-faults explain most of the rest: darkness and export limits.Usually simple to fix
- Battery not dischargingBefore treating it as a fault, check what your tariff is asking. A battery holding charge in the evening is very often following a schedule correctly.Get it checked
- Panels are still liveThere is no switch that stops a panel generating. Turning the inverter off makes it safe to stand next to and leaves the roof wiring live at hundreds of volts.Stop — call an engineer