AlphaESS · An established brand in the UK. 13 codes across 2 product families, each taken from the manufacturer’s manuals. AlphaESS technical support ↗
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Type the code on your display or a word from its meaning. Each code opens its own page with what it means, whether it is safe and what you can check.
13 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| 100000 | Grid_OVP - grid over-voltage | Yes | Yes |
| 100001 | Grid_UVP - grid under-voltage | Yes | Yes |
| 100002 | Grid_OFP - grid over-frequency | Yes | Yes |
| 100003 | Grid_UFP - grid under-frequency | Yes | Yes |
| 100005 | BUS_OVP1 - DC bus over-voltage | Yes | Yes |
| 100007 | Insulation_fault - PV insulation resistance low | Yes | Yes |
| 100008 | GFCI_fault - residual current (leakage) protection tripped | Yes | Yes |
| 100010 | Grid_relay_fault | Yes | Yes |
| 100011 | Over_Temperature - inverter over-temperature | Partly | Yes |
| 100012 | PV_Reverse - PV polarity reversed | Yes | Yes |
| 100017 | MPPT1_OVP - PV1 over-voltage | Yes | Yes |
| 100042 | Output_short - backup (off-grid) output short circuit | Partly | Yes |
| 100043 | Output_overload - backup output overload | Partly | Yes |