Fault codes

What is it telling you?

There is no universal fault code standard. The same number means different things on different brands — code 8 alone means six different things across these four inverters. Pick your device, or search every code at once.

Devices covered

Hybrid inverter · 47 codes EG4 18kPV EG4 18kPV user manual, v2.7.5, sections 12.3-12.4 Off-grid inverter · 53 codes EG4 6000XP EG4 6000XP user manual, v1.7.2, sections 14.1-14.3 Off-grid inverter · 63 codes EG4 12000XP EG4 12000XP user manual, v1.1.1, sections 15.1-15.2 and 11.2 Hybrid inverter · 30 codes Sol-Ark 15K-2P-N Sol-Ark 15K-2P-N Installation Guide, SK140-0001 Rev. 5, section 8.1

Known, not yet covered

These exist. They are not in the app because nobody has read their fault table yet. An empty page is better than a guessed one.

Hybrid inverter EG4 12kPV Model no. IV-8000-HYB-AW 2 MPPTs · 100–600 VDC input · MPPT operating range 120–500 VDC · faults at 550 VDC (MPPT high-voltage protection) · 12 kW PV in, 8 kW out EG4's 12kPV Device Monitoring & Settings Guide (v1.3.0) publishes the full specification but contains no fault or alarm code table — section 6.2.1 documents only the LED colours. Until EG4 publishes the code list, adding one here would mean guessing.

Hybrid inverter EG4 FlexBOSS21 Manual not yet read.

Hybrid inverter EG4 FlexBOSS18 Manual not yet read.

Off-grid inverter EG4 3000EHV-48 Manual not yet read.

Microgrid interconnect device EG4 GridBOSS Not an inverter. It has its own fault behaviour and its own manual. Manual not yet read.

Codes and their meanings are drawn from each manufacturer's own published fault tables. All explanatory text here is original. There is no universal fault code standard: the same number means different things on different brands, and sometimes on different models from the same brand. Voltage thresholds in particular are model-specific. Always confirm against the manual revision loaded on the unit in front of you.