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Vaillant · Heat pumps · Vaillant aroTHERM plus with uniTOWER plus

S.100Standby

Name in the manufacturer's documentation (service manual): Standby[1]

In plain words (editorial)

This is a status message, not a fault. Standby: there is no heat demand or cooling demand.

When to call a service technician: No action needed.

✎ 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. [1] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 56 official manufacturer document quote verified S.100 Standby
  2. [2] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 56 official manufacturer document quote verified There is no heat demand or cooling demand. Standby 0: Outdoor
  3. [3] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 56 official manufacturer document quote verified There is no heat demand or cooling demand