one radiator not working :(

littlemisspink

Hi all, I'm not sure if am allowed to ask this in here or not tbh, but have just put my radiators on for the first time this winter, and they all work fine except for the living room one Both pipes leading to it are cold, and there is green liquid at the bottom of the pipe that doesn't have the thermostat (if that makes sense??) The whole house is only 4 years old so am hoping its not a major (ie expensive) problem. Have bled the radiator but that seems fine. Ayone have any ideas I can try before I have to call someone out ?? Thanks in advance x

Browntoa

turn ALL the other radiators off except that one and see if it comes on , if it has those thermostatic valves try tapping the valve as it may have stuck closed ( especially if it had been left in the closed postition all summer)

littlemisspink

Thanks for your fast reply Am gonna try turning them all off now. How do you take the thermostat off? Do you just pull it off lol?? Sorry, am not used to all this technical stuff lol, this is my first owned home, my landlord used to fix problems before lol x

littlemisspink

Well, have turned them all off except that one but nothing x

Browntoa

the thermostat is the one with the numbers on

these sort of things

http://www.h-i-e.co.uk/acatalog/Thermostatic_Radiator_Valves.html

just tap on the valve itself lightlly with something solid , no need to remove it

muddyl

When you bleed the radiator what happens?
Depending on if the thermostat is on incoming or outgoing, it could help diagnose the problem.

littlemisspink

muddyl wrote: »

When you bleed the radiator what happens?
Depending on if the thermostat is on incoming or outgoing, it could help diagnose the problem.

Lol, am so sorry but I don't understand a word of that haha. When I bleed the radiator, a bit of water came out before turned it back, no hissing or anything. How do I know if the thermostat is on incoming or outgoing please? x
Am gonna try the tapping now and see if that helps x

ariba10

Having turned off the radiators that are working make sure that "Both" valves are open on the one you are having problems with.

littlemisspink

ariba10 wrote: »

Having turned off the radiators that are working make sure that "Both" valves are open on the one you are having problems with.

Yea have seen this when have googled the problem! How do I know if they are both "open" as the end valve that leads into the floor just has a white cap? x

keystone

littlemisspink wrote: »

Lol, am so sorry but I don't understand a word of that haha. When I bleed the radiator, a bit of water came out before turned it back, no hissing or anything. How do I know if the thermostat is on incoming or outgoing please? x
Am gonna try the tapping now and see if that helps x

Well if you have a TRV on it for heavenas sake don't belt the head with something. Take the head off by undoing the knurled nut that secures it to the valve body.



When you have taken it off you will see a pin in the centre of the valve. Try pushing down against its spring and see if it goes down. Its that you need to lightly tap if you cant push it down with your finger. Tapping the side of the valve won't do any good.

The point about opening the bleed valve and let some water out is that the water will be replaced if you have a more conventional system with a header tank and one of the pipes leading to the rad will get hot first as you let water out. Of course, if you have a combi boiler however, all that you will do is reduce the pressure in the system and then you'll have to top it up again.

Cheers

ariba10

The white cap should pull off.

It will expose a brass spindle with two flat sides.

Use a pliers or similar to turn to open.