No pressure

[statham]

Do you think the problem might be with the pipe work or a radiator
And not the boiler

 

[terryplumb]

I have a Combi boiler,every day I have to put the pressure up to 1.5
If I turn the kitchen radiator off both ends my heating works fine
What do you suggest
Many thanks for your help

What does the pressure drop down to ,and over what period of time ?
Does water come out of your pressure relief pipework outside ?

 

[statham]

It goes to Zero in 24 hours
The relief valve has been replaced
No water coming out of the outside pipe

 

[terryplumb]

You may have a pin hole leak in the heat ex ,or on the central heating pipework. You could try isolating the flow and return ,after turning boiler off late tonight and letting it cool down. Check pressure tomorrow morning ,if its dropped significantly its a good indication that the boiler is suspect. If it has not dropped ,open both valves and if it drops sharply its a leak externally to the boiler. The boiler should be isolated electrically overnight so it can't fire up.

 

[statham]

Many thanks for your reply
I will have to have a look

 

[statham]

Hi Terry
I think I have read it correctly
Switch electric off and water supply after I have got 1.5Bar

How long after the boiler has switched off at night can I do the above in the morning should it still read 1.5 bar if not it will be the boiler at fault

 

[terryplumb]

1. Turn off boiler/ central heating and let cool for 1 hour. Turn electric supply to boiler off .
2. When cooled check pressure/ increase to 1.5 bar if need be.
3. Turn the boilers isolation valves on the flow AND return fully off.( if you are unsure which they are post a pic )
4. The longer you can leave all in this state the better ,24 hours or more ,but minimally overnight.
5.if pressure drops during test period its indicative of boiler problem.

Be aware this is not 100 % conclusive as it relies on the boilers isolation valves sealing closed totally , I.e in full working condition.

 

[statham]

Many thanks for your help
That all makes sense
Graham

 

[Claire s]

 

[Claire s]

 

[terryplumb]

Graham the far left pipe ,near the gauge ,has a black plastic lever that you use to close the valve. The right hand side has the same black lever. So from the left its the first and fifth copper pipes

 

[statham]

Thanks Terry
I can see what you are saying
Thanks again

 

[dilalio]

Eh? Who is @Claire s ?

 

[statham]

Daughter
I don’t know how to put on photos

 

[statham]

Dropped.5bar in 12 hrs going to leave it another 12 hrs