Stiebel Eltron
Stiebel Eltron THZ 404 sol / LWZ 404 SOL
Thermostats · Climate
WorksLocal
1 report: 1 says it works.
Reported with 1 integration: Stiebel Eltron ISG.
What people report
| Integration | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| Stiebel Eltron ISG | Works Local | Modbus exception after 2026.7.1; issue closed as fixedSaved copy… has the answer in it: `input block read at address 3679 (count 19) returned Modbus exception code 2`. That is the same failure as #599, where two other LWZ owners report the identical address and count (an LWZ 403 sol and an LWZ 5s plus). Worth following that issue rather than this one, so the discussion stays in one place. Easy to miss, for what it is worth: #599 has address 5219 in its title, which is what WPM and some LWZ machines fail on, so searching for your own 3679 would not have found it. One detail worth correcting, because it points at the wrong culprit: the jump from 2026.7 to … Excerpt saved from GitHub on 2026-10-23. | Issue #601 · 2026-07 |
Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.
In ReReHome
Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.
Identifiers
| Brand | Stiebel Eltron |
|---|---|
| Model | THZ 404 sol |
| Category | Thermostats |