Vaillant · Heat pumps · Vaillant aroTHERM plus with uniTOWER plus
S.581Connection fault: Frequency converter not recognised
Name in the manufacturer's documentation (service manual): Connection fault: Frequency converter not recognised
[1]
This page only quotes the original English documentation. A plain-language explanation has not been written yet, so the page is not indexed by search engines.
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. 58 official manufacturer document quote verified
S.581 Connection fault: Fre
- [2] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 58 official manufacturer document quote verified
Missing communication between the frequency converter and the
- [3] Vaillant uniTOWER plus VIH QW 190/6 E – Operating, installation and maintenance instructions (0020291525_05) (0020291525_05) , p. 58 official manufacturer document quote verified
Missing communication between the frequency converter and the outdoor unit's PCB