EG4_FAAB-2727 (Most Recent Firmware)

EG4_FAAB-2727

2026-03-29

• Based on FAAB-2626/2525.
• Match LCD V25.
• 1. Improved. New England Grid Profile — added regional grid profile support for New England configurations, with Voltage-Active mode disabled by default.
• 2. Improved. Added RS485 BUS communication support on the Meter485 port for PPL Electric installations.
• 3. Improved. LUMA Grid Profile: Voltage-Active Power mode enabled by default.
• 4. Improved. HECO Grid Profile: Frequency-Active Power mode enabled by default; under-excited reactive power set as default.
• 5. Improved. Optimized charging power limitations when PV power is unbalanced across inverters in a parallel system.
• 6. Improved. LCD phase setting labels updated from R/S/T to A/B, B/C, C/A （LCD V25）.
• 7. Improved. Update fan logic to start fans at a lower temperature to optimize heat dissipation.
• 8. Bug Fixes. Fixed repeated switching between on-grid and off-grid modes on the secondary inverter triggered by off-grid cut-off voltage in parallel shared-battery and lead-acid battery mode.
• 9. Bug Fixes. Reduced probability of repeated state switching between PVBatGridOn and PVChgGridOn.
• 10. Bug Fixes. Fixed the inability to exit on-grid AC couple charging state and switch to battery discharge when load exceeds AC couple power in a parallel system.