IAN wrote:
Very likely the diverter valve
Thanks ian , but how can you tell the difference when the heaters are on because it might be still happening - only you wont be able to tell as it take time for them to cool down.
wrote in message
oups.com...
Got abit of a problem with this,sometimes if the heater is turned off
and the setting is only on "hot water only" the boiler doesnt kick in
when the hot water tap is turned on and even with the heaters on it
sometimes doesnt kick in when heating ,what can this be?