Jablotron Volta Integration for Home Assistant

Control your Jablotron Volta electric boiler from Home Assistant via Modbus TCP.

Quick Start

Install via HACS

1. Open HACS → Integrations → Custom repositories
2. Add: https://github.com/legendik/ha-jablotron-volta
3. Download, restart Home Assistant

Configure

1. Settings → Devices & Services → Add Integration
2. Search "Jablotron Volta" → Enter boiler IP address
3. Done! All entities auto-create

Features

Climate Control

• 3 thermostats: Hot water, Heating Circuit 1 & 2
• Auto-detects CH2 availability

Sensors (30+)

• Temperatures: Outdoor (composite/damped), boiler input/return, room temps
• Energy: Total consumption, real-time usage
• System: Pressure, CPU temp, battery voltage

Controls

• Regulation modes: Auto, Summer, Winter, Standby
• Equitherm curve settings (slope/offset)
• Temperature limits, optimal start/stop

Dashboard Included

Import dashboard.yaml for complete 7-tab interface:

• Overview, equitherm visualization, settings, diagnostics
• Pre-configured for floor heating optimization

Requirements

• Home Assistant 2025.9.0+
• Jablotron Volta with Modbus TCP enabled
• Network connection (port 502)

Links

• Issues
• Discussions
• Development