Vaillant boiler showing F.75 or F.29 in Wednesbury? What each tends to mean on ecoTEC models, the safe things to check, and when to call an engineer.
Read the F.75 page. When the pump started, the boiler did not see the pressure change it expected.
Read the F.29 page. The boiler lit, then lost its flame part way through.
Straight away, after ten minutes, only on hot water? The timing of a code is half the diagnosis.
The manual lists the rest. The model name is on the front panel and in the manual, and matching the two stops mix-ups.
Yes, it has shut itself down. A gas smell is not the same: go outside, leave switches alone, and call 0800 111 999.
Nothing extra, it is just how Vaillant prints its codes. F.75 and F75 are the same fault.
No. One reset, then leave it. Repeating it on a real fault can make things worse.
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