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Oct 14, 2019
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Hello,

My vaillant is displaying th error code F.22.
I did some research and apparently it is necessary to increase the pressure but I don't know how to do it.

kind regards
 

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Kein Wasser means No Water. The water pressure needs to be in the green zone on the dial and between 1 and 2 bar. Pictures 2 and 3 are the gas meter you don't need to touch that. Its the water pressure that has dropped. There should be a fill loop from the mains water with a valve to open somewhere near the boiler.
 
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Thanks for your help but I don't know where it is, it's not in one of the pictures ?
Someone familiar with this boiler will have to help here. I think the centre valve is the filler but appears to be turned on. I have a feeling there is another valve to open somewhere to allow it to fill the boiler.
[automerge]1571066048[/automerge]
Have a look at the manual here.

https://www.vaillant.de › documents › download

Sorry just realised doesn't have filling instructions.
 
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Picture of directly underneath might help. It's badge up as an amtoTEC Plus but it looks loosely based on what Vaillant called a TurboMax Plus in the UK - on that particular boiler there was an integrated filling loop that you used a little Vaillant Key with underneath.
 
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Ain’t that the flow an return Shaun? From looking at the pics first LH pipe goes to diverter valve an far RH pipe is connected to the pump
 

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