Vaillant ecotec F22 fault

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I can repair your Vaillant ecotec F.22 problem with one visit. I specialise in Vaillant combi boiler repairs. Please give me a call on 07515058714 to arrange a visit by a local Gas Safe registered Vaillant expert.

The F22 fault code is not uncommon and doesn’t automatically indicate a serious problem. On Vaillant ecotec models, the boiler relies on a pressure sensor to determine if there is enough pressure in the boiler to proceed with the ignition process. If the sensor deems there is insufficient pressure the boiler will cease to function and present the above mentioned fault code. Getting the boiler to function again is usually just a case of adding some pressure back to the system via the filling loop. This feature is essentially a fail safe designed to protect the boiler from running dry and overheating.

However, if your boiler ceases to work on a regular basis(or every time it is used), this definitely indicates a little problem somewhere. If your boiler over-pressurises and loses all of its pressure every time you put the heating on usually indicates a problem with your expansion vessel. If the analogue pressure gauge shows sufficient pressure but you still have the same problem, then it could be an issue with the sensor reading the pressure. The pressure gauge could be blocked however.

In my experience working on many of these boilers, the pressure sensor often gets blocked and the boiler can skip the F22 altogether and just present the F75 code instead. So it thinks there is sufficient pressure in the system but fails on the pump test. Failure of these sensors is not uncommon on these boilers. If you are experiencing the F75 or both of these faults together then take a look at my page on the F75 fault.

Now, apart from adding a bit of pressure to your boiler, all the potential issues mentioned on this page cannot be fixed by a homeowner unfortunately. Not legally anyway. Even a lot of Gas Safe registered “engineers” are not qualified to fix a problem as simple as this, as they don’t have a good enough understanding of how these boilers work, and often end up guessing and fitting unnecessary parts!

It is important to note that this is NOT intended to help other engineers and it is most definitely NOT intended as a DIY self help guide for homeowners trying to fix their own boilers.

If you are an engineer seeking information on how to fix this problem and this has been helpful in some way then thats great. However this page is for information purposes only and cannot be relied upon by someone attempting to carry out any repair – regardless of their qualifications. Read my disclaimer before attempting to use any information on this website.

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I am based in Wath-upon Dearne, Rotherham, South Yorkshire. I cover the whole of Rotherham and most of South Yorkshire, including Sheffield, Barnsley and Doncaster.

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I cover the whole area of Rotherham including central Rotherham, Brinsworth, Catcliffe, Canklow, Masbrough, Treeton, Whiston, Greasbrough, Kimberworth, Thorpe Hesley, Rawmarsh, Wentworth, Bolton-on-Dearne, Goldthorpe, Thurnscoe, Wath-on-Dearne, Mexborough, Swinton, Kilnhurst, Hooton Roberts, Ravenfield, Thrybergh, Bramley, Hellaby, Maltby, Thurcroft, Wickersley and Braithwell.
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I cover areas of Sheffield including central Sheffield, Chapeltown, Ecclesfield, Grenoside, High Green, Oughtibridge, Thurgoland, Wortley, Aston, Aughton, Swallownest, Todwick and Hillsborough.
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