Central Heating problems
Top of radiator is cold – Bleed it. There is air in your system and it has collected at the top of the radiator.
Radiators don’t warm up – Could be a build up of sludge in your system or a faulty pump
Single radiator not working – Is the valve open?
No heating or hot water at all – Is the pump working? Is the timer working? Are the thermostat settings too low?
