Recent content by schford

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    Vaillant 438 s.53 code only with hot water now

    Re-reading my description of current hot water heating it might look as if it is cycling - its not The heating comes on strong(you can hear a nice roar) until it gets to 85/6 then you can here the heating back off a little but still on until temp drops to 81ish then comes on strong again - it...
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    Vaillant 438 s.53 code only with hot water now

    All changes made - seems great so far! Ran the hot water tap for 10 mins to give a decent drain to cylinder. Boiler kicked in and steadily increased temperature up to 86 wit hot water symbol flashing then slowed down - temp dropped to 81 - then kicked in a bit more up to 86 This repeated...
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    Vaillant 438 s.53 code only with hot water now

    there are no valves in the airing cupboard connected to the cylinders. I can only assume there is a single one near the boiler - but will check tomorrow.
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    Vaillant 438 s.53 code only with hot water now

    Will go try those - but quick feedback 1 - I had a bill for a VR65 so I am sure it is in there some where 2 - The 2 cylinders are pretty dumb they are right next to each other in the airing cupboard and there is a single pipe feeding them (it splits) and a single flow back out (with a 2...
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    Vaillant 438 s.53 code only with hot water now

    Thanks so much for the feedback guys - I am going to have to take out the back of a cupboard and move a tumble drier and washing machine to get to the circulation pump!! I am working form home tomorrow - so will have to do it then, think the MRs would kill me if I started taking apart the...
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    Vaillant 438 s.53 code only with hot water now

    Hi All, Have thoroughly searched the forums but can't seem to find the answer for this but it has helped me check things. Our House is a fairly large 3,300 square foot detached house. I had fitted about 7 years ago a new Vaillant 438 boiler to replace 2 really old crumby ones (one did...
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