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Recent content by Reman

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    Extend from 10mm radiator tails

    Thank you! I guess my concern was that there would be a significant flow drop. And As I'm banging down new joists and floorboards, didn't want to have to lift them again in a hurry (ever)! :)
  2. R

    Boiler overheat cutoff after new pump fitted

    I dont know whether you ever got to the bottom of this. But I had a similar problem following exactly the same pump replacement on a Glowworm Ultimate. I spoke with Grundfoss and they confirmed an incompatibility between this pup and the Ultimate Boiler! They authorised a replacement and I...
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    Extend from 10mm radiator tails

    Our system is a mix of 22 and 15 but all the rad's have 10mm tails to the nearest 15mm tee's. No working issues all rads heat up well etc , albeit running on an old Glowworm Ultimate, which is probably not the most economical by modern standards, but we are trying to move, so dont want to...
  4. R

    Boiler overheat tripping

    It is done! Finally got the boiler bled enough to not overheat, (it took another top half drain down band refill) ran up and more importantly fired up on the timer this morning without tripping and again this evening too. So fingers crossed you won't hear from me for a while. Thanks again
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    Boiler overheat tripping

    Thank guys , been on the desk job too long! Washers fitted job jobbed. Tonights mare is getting the boiler to run without tripping the super over heat theres obviously no water got to it and the pump is pulsing (yes bled that) so I'm in the middle of another drain and re-fill again. I think i...
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    Boiler overheat tripping

    Well theres an update to this, it worked perfect on plain water for about 2 weeks ,so I thought I'd finish the job with a flush of cleaner (as suggested) to remove any other issues mentioned before I put it all back together for the winter. So I drained it down, dropped in the F3 cleaner and...
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    Boiler overheat tripping

    We were all in the right area, but I needed to be sure! Apart from anything else the pump was a pig to get at, due to having had built in wardrobes built around the old airing cupboard location, so needed to be sure before I got on it as I'm not very bendy! Pump bought stripped the head unit...
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    Boiler overheat tripping

    Looking further at the valve spec its actually 3 way (4073A) I believe so you can have , water, heating or both. With this in mind and the fact that the pipework is getting plenty hot on both outlets I've convinced myself for now that the chance of it being totally blocked in any position is...
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    Boiler overheat tripping

    I want ready to get wet tonight so I'll look at the pump I'm the morning. I did pull the 2 way valve apart though. `Thanks for the 15-20 deg advice. If i'd not seen that I'd probably thought it jammed and unjammed it very roughly and broke it! From what i can see though, there is no OFF its...
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    Boiler overheat tripping

    Cheers already done that , I can hear the pump motor change speed but no change in the rads. Theres no reason and I've not had a sudden loss of water through the heating circuit, so as far as it re-filling, it shouldnt need to, as mentioned no air bled from the rads
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    Boiler overheat tripping

    Re the flow; Using the Immersion heater as I did this morning I had no problem with the flow of hot and cold to the powwer shower which runs direct of the tanks. Does that also discount some blockageness
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    Boiler overheat tripping

    Id expect about 16 years old, there before we wrere
  13. R

    Boiler overheat tripping

    Thanks for the quick replys. I'm thinking it is the pump, save for what I've said, as its definitely spinning, hence looking for any other possibilities before I start dismantling it. As part of the fiddling I've set the boiler stat lower than normal and I'd say it does take longer to trip. The...
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    Boiler overheat tripping

    Hi All, First post, from a competent, trained Electrical engineer and ex Service engineer, DIYer and hobbyist. :-) The boiler Glowworm Ultimate (downstairs kitchen) has suddenly decided to pop the overheat trip. Never done it before and its not the first time weve run the heating this year or...

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