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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Gasguru, thank you for taking the time to reply. So it looks like it should be able to cope with the 5 wired pump and has the appropriate circuitry, meaning the pump supplied is fine. That clears that up say least. Now I'll have to figure out a way forward as to why it's not firing up...
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    And I take on board what you're saying and appreciate the concern. By no way am I saying I know as well as anybody or that my experience elsewhere means I am completely competent. But there are always mitigating circumstances that mean sometimes I just have to take it on. It's always a learning...
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Hi Gasguru, Appreciate the reply. Hopefully this works, here's a pic of the full model and GC number as well as the PCB board.
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Yeah the plug can only go in one way, I did make sure that was the case. I will double check the wires haven't crimped themselves though. I haven't yet done any voltage checks, but this is where my knowledge would start to dry up and so I'll have to look at getting someone in. I can do basic...
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Hi Novice, Appreciate your reply. I get that there's many different views, and honestly, I'm after all of them. The boiler will be serviced and checked by a gas safe engineer once up and running for safety (it is my moms house after all, I won't take chances), but yeah, I'll give most things a...
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Thanks for the input Ian, very much appreciated
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    So that begs the question of why does the boiler specific number I had to provide my supplier equate to this part number of 178983 being the on stated as correct for my boiler? Logically, there should be at least the option of 3 or 5 wire even if it was the same main part number, perhaps...
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Thank you for the replies. Let's clear up the first point, yes I am a competent person, renovated my whole house from plumbing to electrics (checked and certified by an electrician thereafter), to tiling, to flooring, to plastering and everything in between as well as car mechanics, rebuilding...
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    Vaillant Ecotec Pro 28, new pump fitted, now boiler won't turn on

    Hi guys, my first post here, but I won't lie, I've used this place as a reference point so many times it's been invaluable, so I thought I'd sign up and ask a question I have. I will give as much info as possible so forgive the long read... Last week the pump on my mom's boiler went, as per...
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