Vaillant EcoTec Pro 28: F.22 warning (low pressure), but no filling loop

Discussion in 'Plumbing and Central Heating' started by AmirMoosavi, 5 Dec 2021.

  1. AmirMoosavi

    AmirMoosavi

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    Was away for a week and came home to F.22 error code on my Vaillant EcoTec Pro 28, with a pressure reading of 0.4 bar. I understand that once the pressure is below 0.5 bar it will turn off. Videos I watched recommended turning the valves on the filling loop, but it seems mine doesn't have one? I also checked under the sink and the only thing which looked a valve spur broke off in my hand instantly :/

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  3. ianmcd

    ianmcd

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    It is not in your pics, post a pic of the pipes to the right hand side of your first pic
     
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  4. CBW

    CBW

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    That’s for your washing machine/dishwasher by the looks of it (and probably replaceable).

    Try looking above your boiler or cylinder cupboard (if you have one). Do you know what you’re looking for?
     
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  5. AmirMoosavi

    AmirMoosavi

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    [​IMG]

    That's all the piping I see to the right :shrug:

    Cheers, that does make sense, the washing machine is to the left of that blue valve so I think you are right. From what I've seen online I should be looking for at least one valve connected to a braided hose, but I don't see a braided hose anywhere.
     
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  6. CBW

    CBW

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    Have you looked in the cupboard below your boiler? Can you post a photo of inside the cupboard?
     
  7. ianmcd

    ianmcd

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    OK your filling loop is somewhere else, as you say might be a braided silver hose but not always connected, follow the cold water inlet pipe back from the boiler until you find it
     
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  8. CBW

    CBW

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    Your looking for valves connected to either of the pipes with lines on and the cold main (arrowed), it will be there, otherwise they wouldn’t have been able to fill up initially, without difficulty.
     

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  9. AmirMoosavi

    AmirMoosavi

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    Thanks, here are photos from the cupboard underneath the boiler:

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    Sorry I am not sure which of these would be the cold water inlet pipe?

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  11. ianmcd

    ianmcd

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    Nope not there you will have to look further away, I am never surprised where some people install filling loops
     
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  12. ianmcd

    ianmcd

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    your pic only shows 2 pipes , where do the rest of them go ?
     
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  13. AmirMoosavi

    AmirMoosavi

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    I took this video to give an idea of the layout:



    It looks like one goes outside, and three look like they may be behind the boards of the cupboards below?

    [​IMG]
     
  14. ianmcd

    ianmcd

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    post #7 @CBW has marked it for you, the one with the arrow
     
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  15. ianmcd

    ianmcd

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    could you have made that a bit faster ? remove the bottle of wine and whatever that is in the cupboard beside it, there is a cut out in the back of the cupboard look in there
     
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  16. CBW

    CBW

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    Is there anything next to the cupboard on the left as you’re looking at it? A blank panel, tray space, etc?
     
  17. AmirMoosavi

    AmirMoosavi

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    I had a look in the cut out but I can't see anything :/ I tried tor remove the shelf to get a better look but the piping is in the way.

    I think that goes to the washing machine? Also had a look in the cupboards above the washing machine but no piping there:

     
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