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    Potterton EP2002 to Nest

    It's confusing because the EP were used as a wiring centre. I would suspect your roomstat is wired back into it. Neutrals are linked in the picture, so are Earths. You have 1 Live, which is linked to 5. 3 is hot water on, 4 is heating on. (or vice versa as I can't remember). Not for a DIY to...
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    Vaillant/(Grundfos) CH pump AAV

    Correct they are an AAV complete bottle, however you can unscrew the head off it and renew the one in situ.
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    Sink adapters.

    You have the wrong hoses then. Take nut off iso valve. Take a picture.
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    Sink adapters.

    15mm Isolation valve on the copper, take nut off the other end and connect hoses.
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    Help needed with Tribune HE

    Do you get your car serviced?
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    Yet another Potterton Suprima question!

    Who fitted the PCB?
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    Potterton Promax HE plus

    Take the TRV heads off and then see what happens. It's a Promax. Probably one of the worst for any fault you can imagine in recent years. Get BG back.
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    When hot water gets to set temp what should happen?

    What boiler is it? What unvented tank is it?
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    Ideal Logic Heat 15 leaking and full loop not working

    A. It's not a combi B. Fill valve not working, loop blocked C. The logic flue hood leaking, condensate trap blocked or backing up. D. Nothing you can do.
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    Radiator not centred between pipes

    How much did you pay for that?
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    Glow worm 30cxi keeps coming on

    You haven't fixed it. The diverter is passing. So in the summer or warmer weather running a bath you will still find the radiators coming on.
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    How to check if cylinder coil is leaking?

    That does help. It won't be the coil. Why was the tank drained? It's an awful setup and probably why you have air trapped, bubbling up via those circs to the tank.
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    How to check if cylinder coil is leaking?

    Also pic of Airing Cupboard would help.
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    How to check if cylinder coil is leaking?

    Constantly. I've not read your previous posts. You sure you have an FE tank and not a sealed system? What's that copper pipe near the flue?
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    How to check if cylinder coil is leaking?

    Is there water going out from the FE tank overflow pipe?
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    Water pressure dropping on new boiler

    What system did you have before? If it was tank fed and you've gone to a sealed system a leak is very common. You should've been made aware of this on installation.
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    What kind of push fit is this?

    That's Hep. Easy to dismount, just un-screw and pull out the pipe. There will be an o ring and ring with metal teeth you need to remove too.
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    Air pressure switch filling with water!

    Rain?
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    Possible to replace the exchange heater of a Baxi SOLO 2?

    Like I said, would you drive a 20-25 year old car? If you do, have a think about how efficient it is. Do you have any other appliance that is well needed in your home at that age? Why do you keep it?
  20. G

    WORCESTER GREENSTAR HEAT EXCHANGER PROBLEMS

    Wind up. If you're not you won't get answer.
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