myVAILLANT/MiGo Link appliances affected by delayed data delivery

Incident Report for Vaillant Group API Developer Programme

Resolved

This incident has been resolved.

Posted Dec 05, 2025 - 08:48 CET

Monitoring

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

Posted Dec 02, 2025 - 09:16 CET

Identified

We observe that a low single digit of myVAILLANT/MiGo Link connected appliances is affected by delays in data delivery to our cloud.
This might result in our APIs showing not up-to date data for those affected appliances and also delays in establishing parameter changes on the appliances.

Posted Dec 01, 2025 - 09:28 CET

This incident affected: APIs (advanced diagnostics API v1, advanced settings API v1, consumption API v1, energy management API v1, history API v1, notifications API v1, schedules API v2, settings API v2, states API v2) and Legacy Services (diagnostics API v2).