I've bled all my radiators, one still stone cold throughout. Taken thermostat off and moved the pin freely.
British Gas did service last week and change the pump next to tank.
Anything else I can look at before I call them back out?
Thanks...
One radiator goes hot along with rest, but goes cold after a few minutes, as does the pipe feeding in.
I've tried bleeding, not sure where to go from here...