Radiator Fault?

Question

Hi, I've Just bought a moved into a new house and two of the radiators in the upstairs bedrooms arent working. The house use's a combi boiler (about 4 years old) and i have already blead the radiators neither of them had air in.

Any ideas of the problem and how to fix them.

Thanks in advance

Answer 1

Could be silt and needs flushing

Answer 2

Hi

Someone has already suggested that the TRV may be stuck closed and to remove the head tap the pin with a hammer. In addition to this check that the lockshield valve at the other end of the radiator is fully open. I.E. remove the head and turn the spindle anti clockwise useing a small adjustable spanner.

Good Luck

Answer 3

You need to balance your system, firstly check that the rad v/v's are open on the radiators that are not working, then close down one v/v on all the rest of your radiators this should divert the water to your rads. that are not getting hot, if they still do not get hot then you have a blockage in the pipework/rads/valve's concerned, if they get hot start slowly opening all closed v/v's only by a turn at a time until you get the temperature you want on your radiators, if you open them all fully you will again starve these two radiators of water

Answer 4

Are the radiator valves turned on and is there enough water pressure on the boiler. Check that the boiler pump is working when the heating is on.

Answer 5

Have the radiators got their own thermostats?



Ours did and got jammed in the off position so we removed the thermostats shook them and gave them a gentle knock or two and put them back on, they've been working perfectly ever since.

Answer 6

Are the TRV valves stuck closed? take head of and tap pin (carefully not hard). this should free up if stuck.

common if the valve has been closed for a long time.

Answer 7

if your radiators have got thermostat valve on one side

open it full and tap the metal part of the valve lightly with a hammer

Answer 8

Could be on a seperate thermostat, newer combi have the option