I have an oil central heating system in a two storey house,
the system can be used to heat water only and heat water and the rads, but this past week whenever the heating is on only a few rads heat up, i have switched the room stat up to full and the temperature on top of the boiler to 90 but still not all rads heat up. i turned off all the rads but one in the hall and it got very warm, so i switched on another rad in the downstairs bathroom and it got warm so i tried a few other rads but they will not heat up, anyone offer any help please?
the system can be used to heat water only and heat water and the rads, but this past week whenever the heating is on only a few rads heat up, i have switched the room stat up to full and the temperature on top of the boiler to 90 but still not all rads heat up. i turned off all the rads but one in the hall and it got very warm, so i switched on another rad in the downstairs bathroom and it got warm so i tried a few other rads but they will not heat up, anyone offer any help please?