Manufacturer file
Vaillant
Vaillant references for aroTHERM air-source heat pumps, ecoTEC boilers, and the controls that sit between them.
CoverageIn progress
- References
- 0
- Markets
- United Kingdom, Europe
- Equipment
- Heat pumps, Boilers and hydronics, Controls and thermostats
Vaillant appliances show F-prefixed fault codes on the appliance display or system control, with a separate status-code list for normal operating states.
Product families
Series you may see on the label
Check the model number on the data plate against this list before using any code table. Definitions are published per family, not per brand.
aroTHERM plusecoTEC plusflexoTHERMsensoCOMFORT
No Vaillant reference has been published yet
This hub is open, but it stays out of search results until it carries verified content, because an empty page helps nobody. In the meantime, the cross-brand symptom guides cover behaviour that applies to most heat pumps, and the error-code index may already document a code that matches yours.
Before you use a code table
- Record the full indoor and outdoor model numbers from the data plate, not just the brand name.
- Photograph the display while the code is showing. Some systems clear the code on power interruption and it can be difficult to reproduce.
- Note what the system was doing when the code appeared: starting, running, defrosting, or idle. That context narrows the cause faster than the code alone.