BoilerTool
Home
/
ecoTEC Plus Combi
/
F.344
F.344
The control electrode can no longer be used.
Vaillant ecoTEC Plus Combi
Possible cause
Transmission fault for calibration values
Measure
Replace the control electrode (D.146, D.147).
Source:
Manufacturer manual (PDF)
© 2026 BoilerTool