Stone Cold hallway Radiator

calleyw

Right I have a stone cold radiator in the hallway.

All the rads are boiling up stairs.

Down stars is another matter. it is has got so bad that I have decamped up stairs to one of the bedrooms as once the heating is on they get warm.

I know the first cry is bleed the radiators as they have air in them. maybe they do maybe they don't. My brother came round and bleed them to the point of having to re-pressurise the the boiler a couple of times. And the hall way radiator started to get warm at the top only one. now it is stone cold again.

Arrghhhhhhhhhhhh I know I need to get someone in to service the boiler but they have never seemed to get down stairs right for me.

And I probably going to be renting the house out in a few months so need to get this sorted any ideas?

Thanks in advance

Yours

Calley

wildbri

your radiator will have a valve on either side, at the bottom. One will have a knob on it so that you can turn it off/on. The other one will have a cover where the knob should be, pull of the cover and you will see a stem, this is a lock valve which is adjusted when the system is set up. This valve needs to be opened, anti-clockwise. you will need a tool, adjustable spanner or pair of pliers will do, just turn half a turn and hopefully the radiator will get warm. regards bri

calleyw

Thanks will try. But it is strange as it only started this last year.

As the radiators where balanced approx a year ago.

Yours

Calley

Possetjohn

I know the first cry is bleed the radiators as they have air in them. maybe they do maybe they don't. My brother came round and bleed them to the point of having to re-pressurise the the boiler a couple of times. And the hall way radiator started to get warm at the top only one. now it is stone cold again.

If I understand correctly all the downstairs radiators are cold while the upstairs ones are hot! I would suspect you have an airlock somewhere in the downstairs CH pipework, probably in the pipe from the boiler to the downstairs radiators rather than the return. You could try the following. It is unusual because air in the system or hydrogen from anaerobic corrosion of the steel in the radiators will normally collect in the upstairs radiators.

Open both valves on each of the downstairs radiators to full open. For each of the lockshield valves ( The ones under a cap which have a square or rectangular spindle which opens with a small adjustable spanner) Close them first noting the amount amount of a turn needed to close it (anything from quarter of a turn to approx 2 turns) for each radiator, then open it full. With the CH running close down all the upstairs radiators by either shuttling down the TRV valve to frost protect or closing the manual inlet valves. If you hear a lot of gurgling then the downstairs radiators start to become hot then problem solved! Just reset all the valves to normal positions (especially the downstairs lockshield valves), and bleed the radiators again!

Another possibility is sludge in the radiators but the symptoms of this is normally a cool area of the radiator in the middle lower portion of the panel. Unlikely if it is just the downstairs ones!

Hope this helps

ariba10

Try turning off all the hot radiators (With the boiler on) and note what happens?

iveco_man

pump may have stopped check it as system may have become gravity system with no pump..