Skip to content
EN

Viessmann · Heat pumps · Viessmann Vitocal 250-A (One Base, monobloc)

F.992Short circuit, temperature sensor of external heating water/coolant buffer cylinder

Name in the manufacturer's documentation (service manual): Short circuit, temperature sensor of external heating water/coolant buffer cylinder[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. [1] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 65 manufacturer document – copy from a distributor quote verified F.992
  2. [2] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 65 manufacturer document – copy from a distributor quote verified Check the settings in the
  3. [3] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 65 manufacturer document – copy from a distributor quote verified Adjust set- tings if required
  4. [4] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 65 manufacturer document – copy from a distributor quote verified Check resistance value (NTC 10 kΩ) at connection X17 of the EHCU electronics module
  5. [5] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 65 manufacturer document – copy from a distributor quote verified Replace sensor if necessary
  6. [6] Viessmann – Service instructions: System configuration and diagnosis for heat pumps with Viessmann One Base (6194799 GB, 3/2022) (6194799 GB (3/2022)) , p. 65 manufacturer document – copy from a distributor quote verified No heating/cooling of exter- nal heating water/coolant buf- fer cylinder