Vaillant Group API Developer Programme Status

All Systems Operational

APIs Operational

authorization server Operational

advanced diagnostics API v1 Operational

advanced settings API v1 Operational

consumption API v1 Operational

energy management API v1 Operational

history API v1 Operational

notification push Operational

notifications API v1 Operational

schedules API v2 Operational

settings API v1 Operational

settings API v2 Operational

states API v2 Operational

systems API v2 Operational

system registration API v1 Operational

trouble code information API v1 Operational

end-customer consent portal Operational

developer portal Operational

Legacy Services Operational

systems API v1 Operational

product identification API v1 Operational

system management API v1 Operational

diagnostics API v2 Operational

Operational

Degraded Performance

Partial Outage

Major Outage

Maintenance

Past Incidents

Dec 6, 2025

No incidents reported today.

Dec 5, 2025

myVAILLANT/MiGo Link appliances affected by delayed data delivery

Resolved - This incident has been resolved.
Dec 5, 08:48 CET

Monitoring - A fix has been implemented and we are monitoring the results.
Dec 2, 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.
Dec 1, 09:28 CET

Dec 4, 2025

No incidents reported.

Dec 3, 2025

No incidents reported.

Dec 2, 2025

Dec 1, 2025

slow response times and timeouts in the APIs

Resolved - This incident has been resolved.
Dec 1, 08:57 CET

Monitoring - A fix has been implemented and we are monitoring the results. History API might still show delayed data until all delayed data has been processed.
Nov 27, 13:32 CET

Identified - There is currently an issue in one of our backend services resulting in slow response times or even timeouts in our APIs.
Root cause has already been identified and we will release a fix soon.

We are sorry for any inconvenience this causes you.
Nov 27, 12:15 CET

outdated data for a eRELAX/vSMART/MiGo systems

Resolved - This incident has been resolved.
Dec 1, 08:57 CET

Monitoring - A fix has been implemented and we are monitoring the results.
Nov 27, 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Investigating - For HVAC systems connected via eRELAX/vSMART/MiGo there is outdated data shown in the listed APIs at the moment.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.
Nov 26, 16:01 CET

Nov 30, 2025

No incidents reported.

Nov 29, 2025

No incidents reported.

Nov 28, 2025

No incidents reported.

Nov 27, 2025

Nov 26, 2025

Scheduled Data Service Maintenance

Completed - The scheduled maintenance has been completed.
Nov 26, 12:00 CET

In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Nov 26, 10:00 CET

Scheduled - The affected services will undergo maintenance during the specified period. This may cause temporary unavailability or brief delays in data updates.

We apologise for any inconvenience and thank you for your patience at this time.
Nov 19, 12:30 CET

Nov 25, 2025

No incidents reported.

Nov 24, 2025

No incidents reported.

Nov 23, 2025

No incidents reported.

Nov 22, 2025

No incidents reported.