F22 fault Vaillant ecoTec plus & exclusive – HELP

If a  F22 message appears on the boiler you will have no heating or hot water. This is not usually because the central heating system has lost some pressure (a little bit of water). It is nothing to be concerned about unless it happens regularly, if it does then it may be a boiler fault or a leak on the central heating system. Lots of systems will need filling 3 or 4 times a year. Adding pressure or filling is…...
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