Central Heating Problem

Cubeguy3

I have central heating with seven radiators on it. I have bled them all but I have always had one problematic rad. When bleeding all that comes out is water yet this one never gets hot just luke warm.

Is there an obvious problem or should I get an engineer out?

Thanks

RedOnRed

I had a similar problem today and just opened up one of the valves further. You might have to do the same or just replace one.

Cubeguy3

Valve's open full - might see if it needs replacing then (however someone has just said to me that the system may need balancing?)

lestamunda

is it the last rad in the queue? do the others warm first, just check the order in which the water goes through (which one gets hot first at top, then follow others in order)................if it is the last, you will have to rebalance the others (make the valves toghter so water goes in slower, hence give more of a chance of it reaching the last rad!