Useful Tip for Vaillant Boilers, Turbomax and Thermocompact range.
If you have a F.28 fault code showing on your boiler, this could be because, there may not be enough water pressure in the boiler. There is no mention of low water pressure under the F.28 fault code. This is normally mentioned under the F.22 fault code. Please bare this in mind, and check you`re pressure gauge is standing at 1 bar. There are many reasons why your water pressure may have dropped. It is always wise to have a Boiler service once a year.
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