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Solis inverter error codes

Solis (Ginlong) · A major brand in the UK. 23 codes across 3 product families, each taken from the manufacturer’s manuals. Solis technical support ↗

Find a Solis engineer →23 codes · reviewed 24 September 2026

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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.

23 codes

CodeMeaningStops?Homeowner check?
ARC-
AFCI failure - DC arc detected.
YesYes
ARC-FAULT
Detect arc in DC circuit.
YesYes
Fail
Meter communication fail.
PartlyYes
Fan
Fan alarm.
NoYes
Grid
Over grid voltage.
YesYes
GRID-INTF.
AC hardware overcurrent (grid interference).
YesYes
GRID-INTF02
Power grid disturbance 02.
YesYes
ILeak-PRO01
Leakage current failure 01 (30 mA); 02=60 mA, 03=150 mA.
YesYes
Leakage
Leakage current protection.
YesYes
LmtByEPM
The device's output is under control (export limit).
NoYes
LmtByVg
The device is in the Volt-Watt mode (output limited by high grid voltage).
NoYes
NO-Grid
No grid.
YesYes
OV-DC
Over DC voltage.
PartlyYes
OV-DC01
DC 1 input overvoltage.
PartlyYes
OV-G-F01
Grid frequency exceeds the upper frequency range.
YesYes
OV-G-V01
Grid voltage exceeds the upper voltage range.
YesYes
OV-TEM
Module over temperature.
YesYes
PV
PV negative ground fault (PV ISO-PRO02 = positive ground fault).
YesYes
Reverse-DC
Reverse DC polarity.
YesYes
Screen
Inverter internally damaged (screen off while DC present).
YesYes
State
G100 State 2 excursion - export current exceeded the G100 backflow limit.
PartlyYes
UN-G-F01
Grid frequency exceeds the lower frequency range.
YesYes
UN-G-V01
Grid voltage exceeds the lower voltage range.
YesYes