my mum has parkray solid-fuel.one morning after she made up the fire she noticed that her rads were cold. she had a plumber out and he said that the pump was bad and he replaced it. Now the rads are only getting warm. She said that she bled the rads.
Vent the radiators and the pump and see what happens from there. If the system was drained down to change the pump then there may air in the pump and rest of the system.
