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[TD]

21? 

Conclusive proof of who wears the trousers there. 

The dog has clearly been taught well.

Mine is set to 21C , I'm the only one in my house who wears the trousers 

Its also the government advice temp.....tho that is probably best ignored....but its a temp I feel comfortable 

[STEMO]

The metal cover is in the cupboard in the kitchen, I reckon someone has slammed the boiler cupboard door shut with the cover open.

[STEMO]

17 got me in, thanks.

I've pressed a few buttons and now it won't work at all ........not 

[TD]

So I pulled out the little filter on the cold feed to the boiler this arvo and it was OK, so it looks as though I have bigger problems.... 

Any error code showing when there is hot water demand?

[Sir Tigger KC]

So I pulled out the little filter on the cold feed to the boiler this arvo and it was OK, so it looks as though I have bigger problems.... 

Any error code showing when there is hot water demand?

Nope,  apart from the poor water pressure at the hot taps all is normal. 

[STEMO]

The pressure on our hot taps has slowed since the weather got colder. Could it simply be that, because the temperature of the cold water feed has dropped, the boiler is slower to heat to the required temperature? 

[TD]

The pressure on our hot taps has slowed since the weather got colder. Could it simply be that, because the temperature of the cold water feed has dropped, the boiler is slower to heat to the required temperature? 

Water temp coming from water pipes buried underground only varies slightly, plus the pressure of the hot water would remain the same, just take ever so slightly longer to heat it, hardly noticeable.   

[STEMO]

The pressure on our hot taps has slowed since the weather got colder. Could it simply be that, because the temperature of the cold water feed has dropped, the boiler is slower to heat to the required temperature? 

Water temp coming from water pipes buried underground only varies slightly, plus the pressure of the hot water would remain the same, just take ever so slightly longer to heat it, hardly noticeable.   

Yeah, people keep telling me that that water from the cold tap only varies slightly, but it certainly varies quite a bit in the houses I've lived in. And I reckon it's very noticeable.

[TD]

The pressure on our hot taps has slowed since the weather got colder. Could it simply be that, because the temperature of the cold water feed has dropped, the boiler is slower to heat to the required temperature? 

Water temp coming from water pipes buried underground only varies slightly, plus the pressure of the hot water would remain the same, just take ever so slightly longer to heat it, hardly noticeable.   
[/quote

Yeah, people keep telling me that that water from the cold tap only varies slightly, but it certainly varies quite a bit in the houses I've lived in. And I reckon it's very noticeable.

I don't disagree with you, if you are noticing a temp in the water that has been standing in the pipes in your house, but if you let the cold tap run for 10 secs or so.....I bet theres not much difference in temp over the year. 

[TD]

So I pulled out the little filter on the cold feed to the boiler this arvo and it was OK, so it looks as though I have bigger problems.... 

Any error code showing when there is hot water demand?

Nope,  apart from the poor water pressure at the hot taps all is normal. 

It maybe then, Shakeng is correct, you have limescale buildup 
How old is the boiler?
I did try to have a looksee on your water company website, to see the hardness of the water, but it kept saying data unavailable.
You may have better luck having a look... 
I also had a look on your boiler manu website .... its suggests a fixed price of £200 summat for a repair, might be worth considering 
Altho I would, if possible, see what the flow is like going into boiler and see what the flow is like coming out of the boiler, to ensure the fault lies within the boiler and not a partially blocked pipe somewhere 

[Sir Tigger KC]

The boiler is in South Wales so it's Welsh Water. 

It's about 4 years old, and I'm not sure what the hardness of the water is to be honest.  As said earlier the little filter was clean but the heat exchanger could be clogged up with limescale as Shakeng said earlier.    I guess it's possible that there's a blockage somewhere in the hot water pipes downstream from the boiler but how to check? 

As it's in a rental property it's time to get the professionals in so I'll give my GasSafe guy a ring on Monday morning.   

[Andy H]

The boiler is in South Wales so it's Welsh Water. 

It's about 4 years old, and I'm not sure what the hardness of the water is to be honest.  As said earlier the little filter was clean but the heat exchanger could be clogged up with limescale as Shakeng said earlier.    I guess it's possible that there's a blockage somewhere in the hot water pipes downstream from the boiler but how to check? 

As it's in a rental property it's time to get the professionals in so I'll give my GasSafe guy a ring on Monday morning.   

Any children in the house?

I would trace the route of the pipes serving the boiler to check that little fingers haven't partially closed a valve somewhere

[STEMO]

Mine has got a fernox valve in the old cylinder cupboard upstairs. Apparently you switch the water valves either side of it off, clean the magnet, inject some more fernox and switch the valves on again. Keeps it all tickety boo....apparently.

[STEMO]

This is the fella:

http://www.plumbworld.co.uk/fernox-tf1-compact-filter-93-32269?utm_source=GoogleBase&utm_medium=GB&utm_campaign=GoogleBase&gclid=CNKLpKjM3c8CFasp0wodvdgJxw

[Sir Tigger KC]

No nothing fancy like that and the only kids in the house are a pair of very spoilt Staffies!