Thanks for that Tony - I reposted because I seemed to ber getting variable information in the replies before. I am a technical type and think that I am describing the problem properly - my HW is not hot (just warm - it is being heated but not much) if I turn on a tap and the CH is NOT running -...
To restate the symptoms -
HW cool if CH NOT running !
If I do NOT have the heating on - I turn on a HW tap and the water does not get hot, only warm. If I then turn off the HW tap and turn heating on via the timer (1 hour CH demand) then wait a minute or two and then turn on the HW tap...
To restate the symptoms -
If I do NOT have the heating on - I turn on a HW tap and the water does not get hot, only warm. If I then turn off the HW tap and turn heating on via the timer (1 hour CH demand) then wait a minute or two and then turn on the HW tap, water gets hot like it used to...
I have just started having a problem with the Hot Water supply - it now only seems to supply really hot water if I have the heating cirtcuit running first - If I turn on a HW tap without the heating on (and running for a minute or two) the water comes out only just warm. Boiler is 5 years old...