Page 1 of 1

HA stopped working

Posted: Wed May 06, 2026 9:25 pm
by Willzs
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?

Re: HA stopped working

Posted: Thu May 07, 2026 10:18 am
by MaterialBarracuda48
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.