FoxESS Community - Owners & Installers Forum

Hi all
My HA integration has been working without issue but the last few days I just get a connection error and all values say unknown. This is the error it shows:

Error connecting to inverter (friendly name: ""). Error reading registers. Type: RegisterType.HOLDING; start: 31000; count: 43; slave: 247 from /dev/ttyACM0: Modbus Error: [Input/Output] No Response received from the remote slave/Unable to decode response

Does anyone know a fix for this?

Usual quick checks

1. Broken wire(s)
2. Inverter needs restarting
3. HA needs restarting

If that doesn't make it work, then check the finer details on settings.

MaterialBarracuda48 wrote: ↑Thu May 07, 2026 10:18 am Usual quick checks

1. Broken wire(s)
2. Inverter needs restarting
3. HA needs restarting

If that doesn't make it work, then check the finer details on settings.

I've tried those things and still get the same issue. I've not changed any of the settings so not sure why they'd effect it?