Cold radiator

[reg7]

Hi all, Last year we had a new boiler system fitted. The wife and I fitted the previous system with NO knowledge just common sense and drawings, it lasted 28 years. Last year I had a so called boiler company and a qualified " use " this word very loosely "FITTER" fit a new system, he worked for the company. He said he could not fit it in the loft so put it in the VERY SMALL bathroom, gas pipe outside and up the outside wall, but this QUALIFIELD fitter ran the gas pipe ACROSS the gutter down pipe drain, he made so many mistakes. Anyway cut a long story short, I had to remove the bathroom RAD did some work refitted it back all worked, but next day and since the RAD and pipework to it is stone cold, all the other RADS are working fine. ANY IDEAS PLEASE. Reg.

 

[motorbiking]

Close all the other rads then hopefully it will blow through. Bleed as necessary

 

[reg7]

Hi motorbiking, good idea, I will try that tomorrow. When I turn off all the rads leave the cold on ???. Cheers

 

[reg7]

Hi motorbiking, good idea, I will try that tomorrow. When I turn off all the rads leave the cold one on ???. Cheers

Read more: https://www.diynot.com/diy/threads/cold-radiator.586841/#ixzz7KyrJik9h

 

[terryplumb]

Yes ,both valves open on the rad that won't heat up , all other rads close their TRV only ( or wheel head ) and don't touch their lockshield valve.

 

[reg7]

Hi terryplumb, you have lost me on the "TRV only ( or wheel head ) and don't touch their lockshield valve."

Read more: https://www.diynot.com/diy/threads/cold-radiator.586841/#ixzz7KzfUtx00

 

[terryplumb]

Radiators have two valves ,one in each end.
TRV = thermostatic radiator valve ,used by householder to alter temperature ,or turn rad off .Usually have a large plastic head with numbers on it.
Some rads don't have a TRV ,just a wheelhead ,small white plastic cap with + and - on it . These are also used by householder to regulate rads temperature or turn it off.
The valve on the other end of the rad is the lockshield ,and is set by the system installer ,and not generally altered by the householder.

 

[reg7]

HI terryplumb, thanks for your help, will try that today.

 

[reg7]

Thank you motorbiking and terryplumb, ALL working again GREAT. Reg

 

[reg7]

Hi motorbiking & terryplumb, All working now THANK YOU but I have caused another problem if you can help please. When I turned off the last rad tap I had to use a spanner and I sheared off the top flat piece on the tap, HELP please.

 

[terryplumb]

You will need to replace the radiator valve

 

[reg7]

Hi turn off the mains and and drain first I assume, Cheers

 

[terryplumb]

Is your system sealed / pressurised ,or fed from a loft tank ?
Although it's possible to swap a rad valve without draining fully ( called snatching) it's probably better to drain .

 

[reg7]

Hi, not sure we did have a tank, but now since we have had a new boiler so its got to be one of the others but I don't know how to tell. I will turn off the mains and drain the RAD for safety. Cheers.

 

[terryplumb]

Tell us the boiler make and model.
Do you have a hot water cylinder ?