Hi I am getting only warm radiators yet hot water is fine.
Boiler is Thorn Apollo 15/30
I have changed the pump and the balance valve. The old one had a leak directly onto the pump so I suspected a problem there.
This didnt solve the problem.
However I noticed that when the CH is on the boiler doesnt appear to run through its cycle , in otherwords its fired up all of the time. It never overheats though, also I can hold my hand on the inlet pipe to the pump which i would assume should be mad hot. It seems to me that the flame isnt efficient enough to trip the Hi stat. Would a burner and heat exchanger and flue clean help? I cant understand why the burner should be lit constantly, yet i can hold the hot water pipe continually.
Many Tanks Tiggsy