Daikin Altherma 3 R / 3 H HT / 3 M

Heat pumps Hot water Fully supported

What Franzl can do with this device

Measure live power	✓
Meter energy (kWh)	✓
Read state of charge (SoC)	—
Read temperature	✓
Control power	✓
Control operating mode	✓
Set target temperature	✓

How it connects

Franzl uses the Home Assistant custom integration jwillemsen/daikin_onecta (installable via HACS). If your device is set up there, Franzl finds it automatically.

Setup

Three connection routes: the EKRHH accessory module is preferred (Modbus TCP, local, full control including power limits), alternatively an SG-Ready adapter BRP069A61 (potential-free contacts), or, without extra hardware, the HACS cloud integration daikin_onecta.

Prerequisites

With EKRHH: Modbus TCP enabled in the Onecta app menu, module installed
With SG-Ready: BRP069A61 wired to terminal X1A, "Smart Grid" enabled in the heat pump's installer menu
With the cloud connection: Daikin Onecta account using the same login email as the Onecta app

What you enter

IP address of the EKRHH module: Required for the Modbus connection Port 502, with TLS 802

Device fits? Then nothing stands between you and getting started.

Install Franzl