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Hopefully there will be someone on here who can point me in the right direction...
Two radiators are refusing to get even warm let alone hot. They are both on (and the only ones on) one half of the downstairs circuit. The feed for these radiators is seperate from the other radiators on the ground floor, in that the feed and return drops down from the 1st floor at different ends of the house for the two circuits.
The plot thickens slightly. If had one of the rads off this morning, and flushed it, to find no more sludge than I would probably expect, and a now free flowing rad. Both the supply feed and the return feed both supplied water when the valves were opened, so it doesnt look like an air lock.
Connected the rad back in, and opened the feed valve to fill (and bled at the same time). Once full I opened up the return, and the then warm radiator cooled down slowly, failing to get hot. The other rads in the house are proper hot, and the boiler is running at 80 degrees.
If I bleed the return line (it has a bleed connector at ground level), the rads fill back up with hot water, but then once I stop bleeding the rads cool back down.
So to me it seems that there is a problem with the return (cold) feed, however I know that it contained water at system pressure when I opened the valve, and that water was free flowing.....
Help please :)
James
Two radiators are refusing to get even warm let alone hot. They are both on (and the only ones on) one half of the downstairs circuit. The feed for these radiators is seperate from the other radiators on the ground floor, in that the feed and return drops down from the 1st floor at different ends of the house for the two circuits.
The plot thickens slightly. If had one of the rads off this morning, and flushed it, to find no more sludge than I would probably expect, and a now free flowing rad. Both the supply feed and the return feed both supplied water when the valves were opened, so it doesnt look like an air lock.
Connected the rad back in, and opened the feed valve to fill (and bled at the same time). Once full I opened up the return, and the then warm radiator cooled down slowly, failing to get hot. The other rads in the house are proper hot, and the boiler is running at 80 degrees.
If I bleed the return line (it has a bleed connector at ground level), the rads fill back up with hot water, but then once I stop bleeding the rads cool back down.
So to me it seems that there is a problem with the return (cold) feed, however I know that it contained water at system pressure when I opened the valve, and that water was free flowing.....
Help please :)
James
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