outdated data for a eRELAX/vSMART/MiGo systems

Incident Report for Vaillant Group API Developer Programme

Resolved

This incident has been resolved.

Posted Dec 01, 2025 - 08:57 CET

Monitoring

A fix has been implemented and we are monitoring the results.

Posted Nov 27, 2025 - 16:31 CET

Investigating

For HVAC systems connected via eRELAX/vSMART/MiGo there is outdated data shown in the listed APIs at the moment.
eRELAX/vSMART/MiGo connected systems are simple systems consiting of a gas boiler and the eRELAX/vSMART/MiGo gateway and thermostats itself.

Posted Nov 26, 2025 - 16:01 CET

This incident affected: APIs (advanced diagnostics API v1, history API v1, states API v2) and Legacy Services (diagnostics API v2).