I got a FoxESS H1 6kW with an EP11 battery in Portugal and running into issues.
Setup:
- H1-6.0-E-G2 wifi inverter + EP11 battery (single unit)
- Grid not yet connected (testing with alternative power supply)
- PV DC switch OFF during tests, and during night
- Inverter boots, shows "Waiting…", no errors initially.
- When starting the EP11, SOC shows (49%) in the inverter, then in the battery the “S” LED on the battery flashes red and SOC right led becomesfixed green.
- Inverter shows error (normal I think) "Grid Lost Fault", "Waiting…", and blinking “Play” LED blue, “!” LED red.
Checked
- Using original PCS cable (BMS → PCS).
- Startup order tested both ways.
- Firmware versions: Master 1.22 / Slave 1.02 / ARM 1.37.
- Is this a firmware issue (H1 v1.22 too old for EP11)?
- Does the unused PCS port need a termination plug?
- Is “Grid Lost Fault” simply because I’m not on the real utility grid? (It only apears with better start)
- What is the expected LED behavior when EP11 ↔ H1 communication is OK?
Regards from a curious guy