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Solis inverter alarm codes, the full list
Solis inverters use short mnemonic alarm codes like OV-G-V or NO-Grid (each also has a hex number such as 1010), shown on the screen or in the SolisCloud app. Find your code below, see how urgent it is, and open the step-by-step fix. Start by typing it:
| Code | What it means | Urgency | Fix |
|---|---|---|---|
| OV-G-V | Grid overvoltage (1010) | Self-clears | Full fix guide → |
| UN-G-V | Grid undervoltage (1011) | Self-clears | Full fix guide → |
| OV-G-F | Grid over frequency (1012) | Self-clears | Full fix guide → |
| UN-G-F | Grid under frequency (1013) | Self-clears | Full fix guide → |
| NO-Grid | No grid detected (1015) | Self-clears | Full fix guide → |
| G-PHASE | Unbalanced 3-phase grid (1016) | Check & restart | Full fix guide → |
| GRID-INTF | Grid interference (1030) | Check & restart | Full fix guide → |
| OV-DC | DC overvoltage (1020) | Stop, call a pro | Full fix guide → |
| UN-BUS | DC bus voltage too low (1023) | Check & restart | Full fix guide → |
| DC-INTF | Abnormal DC input current (1027) | Check & restart | Full fix guide → |
| Reve-DC | DC reversely connected (1028) | Stop, call a pro | Full fix guide → |
| PV-ISO-PRO | Low PV insulation / ground fault (1033) | Stop, call a pro | Full fix guide → |
| ILeak-PRO | Leakage current protection (1034) | Check & restart | Full fix guide → |
| OV-TEM | Over temperature (1032) | Check & restart | Full fix guide → |
| RelayChk-FAIL | Relay self-check failure (1035) | Check & restart | Full fix guide → |
| ARC-FAULT | DC arc fault, fire risk (1041) | Stop, call a pro | Full fix guide → |
Reading the code on your Solis
The alarm shows on the inverter's display or under the alarm list in the SolisCloud app. Note the exact code (and whether it cleared on its own) before you start.
How to read the urgency rating
Self-clears usually a passing grid or weather event; the inverter reconnects itself.
Check & restart do a few safe checks and a proper power cycle.
Stop, call a pro a safety or hardware fault; don't keep resetting it.