Hot water turning Luke warm from boiler

But you are already trying to get a heads up and not trust a £xx repair, this fault especially on the V can be anything, we can suggest what it is, but without testing and being there we can't give you the advice you seem to want. It's nothing you can do yourself, that's the problem. We can give advice on plumbing, basic repairs but a boiler fault we can't.
 
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But you are already trying to get a heads up and not trust a £xx repair, this fault especially on the V can be anything, we can suggest what it is, but without testing and being there we can't give you the advice you seem to want. It's nothing you can do yourself, that's the problem. We can give advice on plumbing, basic repairs but a boiler fault we can't.

Sorry but that's not what I'm after at all. I'm looking for advice if anyone has experienced something similar and if so, input gratefully received.

If not, I'm not expecting and have never asked for anyone to comment on costs or the proposed repairs. I will discuss that with the RGI.
 
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Be interesting to know what your problem was ,,,, but I doubt you will reply once the rgi has rectified the problem :whistle:
 
Hello

Bit of a strange one.

Our boiler (Viessman 35kW) provides our hot water. It starts off fine and hot but a few minutes later the water runs luke warm. When it's running luke warm it heats up to hot again temporarily when another hot tap is run but then quickly goes back to luke warm again.

When in the shower the water changes quickly from hot to luke warm.

Looking at the boiler when the hot is running it goes up to 70 plus deg then drops down to 40 ish.

Seems very strange - anyone any ideas?

Thanks

your pockets are going to get squeezed just like the hose just get rgi to repair won't cost the earth:LOL::LOL::LOL:
 
Cpuld be that the engineer squized the flow or return hose and a lump of oxide got into plate
Why on earth would an engineer squeeze a hose and how would that cause a lump of so called oxide to get into the plate ?
Think about the flow and return pipes to main hex,oxide sits nicely in hoses and if sqaushed it will fall into plate hex after a little while.
Had loads as engineers squeeze to make work which is naughty!!
 
Cpuld be that the engineer squized the flow or return hose and a lump of oxide got into plate
Why on earth would an engineer squeeze a hose and how would that cause a lump of so called oxide to get into the plate ?
Think about the flow and return pipes to main hex,oxide sits nicely in hoses and if sqaushed it will fall into plate hex after a little while.
Had loads as engineers squeeze to make work which is naughty!!

Where are the hoses on this boiler Hason?
 
Cpuld be that the engineer squized the flow or return hose and a lump of oxide got into plate
Why on earth would an engineer squeeze a hose and how would that cause a lump of so called oxide to get into the plate ?
Think about the flow and return pipes to main hex,oxide sits nicely in hoses and if sqaushed it will fall into plate hex after a little while.
Had loads as engineers squeeze to make work which is naughty!!
They would have to squeeze for a while for that to build up, r u an rgi ?
 
On a vitodens?, rubber flow and returns to the primary hx. Like Hanson says they perish and restrict the plated.
 

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