Vaillant ecoTEC exclusive Fault Codes
The Vaillant ecoTEC exclusive is the flagship of the range — the Green iQ badge marking its wider modulation, higher recyclability and smart-home integration. It shares the family F-code language, so everything true of the ecoTEC plus's codes holds here, with one addition: the exclusive's electronics do more (gas-adaptive combustion among it), so a handful of its codes concern self-calibration and combustion regulation that simpler models never surface. Owners tend to have the exclusive installed with Vaillant's sensoCOMFORT or myVAILLANT controls, which will often relay a fault notification to your phone before you have seen the boiler — but the F-code on the boiler display remains the authoritative fact to note. Each code below links through to its full diagnosis page.
Where ecoTEC exclusive fault codes appear
The exclusive carries Vaillant's higher-spec display with plain-text status alongside the F-code — on a fault you see the code and a short description. Connected controls may mirror the fault in the app; record the F-number itself either way, as that is what the diagnosis (and any engineer) works from.
Resetting a Vaillant ecoTEC exclusive
Reset via the flame-cross button for about a second; connected app controls also offer a remote reset for some lockouts. Top up to 1–1.5 bar before resetting an F.22. The exclusive's combustion self-calibration can follow certain resets — a minute or two of unusual fan behaviour after clearing a code is normal.
Common ecoTEC exclusive problems
The exclusive shares the platform's classics — F.22, F.28/F.29, F.75 — plus occasional calibration-related codes from its adaptive combustion system, which usually resolve with the documented recalibration rather than parts. As the flagship it is usually installed by Vaillant Advance installers with long warranties: check warranty before paying for any significant repair.
Most common ecoTEC exclusive fault codes
- F.75 No pressure change detected when the pump starts — typically a faulty pump or water… Read more →
- F.22 F.22 is a low water pressure (system protection) fault. Your Vaillant boiler has detected… Read more →
- F.28 F.28 is an ignition lockout fault. Your Vaillant boiler ran through its normal start-up… Read more →
- F.29 F.29 is a flame-failure lockout. It means your Vaillant boiler successfully lit but then… Read more →
- F.83 The F.83 code on a Vaillant boiler indicates that after the burner has ignited, the flow… Read more →
- F.84 The F.84 code appears on Vaillant boilers when the control board detects a persistent,… Read more →