Vaillant · Heat pumps · Vaillant aroTHERM plus with uniTOWER plus
S.273Building circuit: Flow temperature too low
Name in the manufacturer's documentation (service manual): Building circuit: Flow temperature too low
[1]
In plain words (editorial)
The measured flow temperature in the heating circuit is below the application limits.
When to call a service technician: If it appears often, contact a heating engineer.
✎ editorial – written from the cited sources, not a manufacturer statement. Status: draft.
The Polish page has more detail (plain-language explanation, safe checks, guides): Read in Polish →
Sources
Every statement has a footnote to the document and PDF page. “Quote verified” means the quote was found automatically in the text of that page.
- [1] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 57 official manufacturer document quote verified
S.273 Building circuit: Flow
- [2] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 57 official manufacturer document quote verified
The flow temperature that is measured in the building circuit
- [3] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 57 official manufacturer document quote verified
The flow temperature that is measured in the building circuit is below the application limits