If you’re experiencing a problem with your Vaillant boiler, the first thing you will probably need to do is to check for an error code. However, even if you find an error code on your boiler, it won’t necessarily mean anything to you. Luckily, we can explain to you what the Vaillant F22 error code means, so that you can take steps to get your central heating up and running again.

What Does The Vaillant F22 Error Code Mean?

The Vaillant F.22 error code is a sign that your boiler has low water pressure. To rectify the problem and to get your boiler functioning normally again, you’ll need to increase the water pressure back to the right level. Vaillant boilers can only work when they have the right water pressure. If the water pressure drops too low, the boiler will indicate an F22 error code. It then locks out and the hot water and central heating will no longer work.

What Should The Water Pressure Be?

The water pressure for your Vaillant boiler to function properly should be about 1.5 on the boiler’s inbuilt pressure gauge. The boiler will continue to work if the pressure drops below this, but once it drops to 0.3 bar or below, the error code will appear and the boiler will stop functioning for your safety.

What Are The Common Causes Of A Vaillant F22 Fault Code?

If there is insufficient water pressure, a Vaillant boiler cannot ignite and therefore cannot function to heat your water and your home. Therefore, you need to pinpoint the cause of the problem in order to get your boiler up and running properly once more.

Naturally, boilers always lose pressure with time, but the progression is very gradual. If the pressure in your boiler has suddenly dropped, this indicates that there may be a leak inside the system.

You should never try to repair a leak in your Vaillant boiler yourself. This is a job that should always be tackled by a professional and trained heating engineer. If you detect a leak, which may be by a radiator, around the boiler itself, or anywhere around the pipes in your home, immediately switch off your water supply as damage could otherwise be caused to your property.

If there is no leak in your system, it’s possible that there is another cause of the F22 error code. A component inside the boiler, for example, a pressure sensor, pump lead or pump itself, could be defective. This is a problem that must be diagnosed and repaired by a fully-qualified boiler engineer.

How Is The Vaillant Boiler F22 Fault Fixed?

In order to resolve this error code and get the boiler functioning again, you need to increase the pressure. This is the process that must be followed:

  • Switch off the boiler.
  • Wait for the boiler to cool.
  • Locate the filling loop – this is usually under the boiler. It looks like a metal hose with valves at both ends.
  • Turn the valves. This enables water to enter into the boiler.
  • Keep watching the pressure gauge.
  • When the needle gets to the 1.5 bar mark, return the valves to their original position.

Rapid Repair Of The F22 Error code

Since an F22 error code on your Vaillant boiler will leave you without any hot water or any central heating to keep your home way, you’ll certainly need to get this problem resolved quickly. The safest and fastest way of rectifying this error code is to call in a registered Gas Safe engineer. Our team of professional and registered Gas Safe engineers are highly experienced in repairing Vaillant boilers that show an F22 error code, so you can depend on us to get the job done quickly and efficiently at a price that you can afford.

Are There Other Vaillant Boiler Fault Codes?

There are many different error codes that may appear on your Vaillant boiler. F22 is just one of the possibilities. If you are experiencing an issue with your Vaillant boiler, you may or may not see an error code on its display. When you contact us to arrange a repair, let us know the error code that you see (if there is one) and we will be prepared to carry out the correct repair to get your system up and running again when we visit your property. Rest assured that we are well-trained in handling all types of Vaillant boiler problem, so you’ll be in safe hands when you contact us.

Can I Fix This Error Code Myself?

Although you could attempt to fix the Vaillant F22 error code yourself, you’ll find that a registered Gas Safe engineer will be able to resolve the problem safely and speedily. Contact us today to get a free quote and to arrange your boiler repair.