Vaillant Boiler F24 Fault – Error Code Guide

The Vaillant F24 error code is triggered by a lack of water circulating through the system, preventing the boiler from working. It can be caused by something as simple as accidentally coles isolation valves, or a larger problem such as a faulty PCB. The models that this error affects are the Turbomax plus 824/828E, Ecomax … Read more

Vaillant Boiler F27 Fault – Error Code Guide

The Vaillant F27 error code affects the ecoTEC PRO or PLUS boilers, and it’s a fairly common problem in boilers manufactured between 2005 and 2012. It is most often caused by moisture affecting the electrical components or a faulty PCB. It can also occur in conjunction with the F61 and F62, which both relate to … Read more

Vaillant Boiler F28 Fault – Error Code Guide

The Vaillant F28 error code is triggered after three failed ignition attempts and is most likely caused by a gas supply problem or if it occurs during cold weather, a frozen condensate pipe. Since the problem may be to do with the gas supply, a professional must be called to deal with the issue. The … Read more

Vaillant Boiler F22 Fault – Error Code Guide

A Vaillant F22 error code is triggered by low water pressure, and can happen gradually over the life of the boiler or suddenly as a result of a faulty part or leak in your system. At its simplest, you will be able to resolve this error yourself, but if the problem is caused by faulty … Read more

Vaillant Boiler F23 Fault – Error Code Guide

The Vaillant F23 error is applicable to the Ecotec Pro, Ecotec Plus and Ecotec Exclusive. The Vaillant F23 error code is triggered by a large differential in temperature between the flow and return pipes, and since it has quite a few possible causes it needs fixing by a professional. However, it isn’t a fatal error … Read more

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