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By *vd1987 OP Man
over a year ago
Manchester |
Look for advice. One radiator won't heat up, all others in the house do.
I have bled the system and taken the tvr off. The pin seems to be stuck up and I can't push it back in to put the cap back on.
Any advice before I call a plumber please? |
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Where in the house is the cold rad in relation to your boiler? Is it the rad that is closest or furtherest away from your boiler?
If it’s the most far away then you may need a power flush of the whole system including pipes to remove all of the detritus and general crap from the pipes and the last rad in the chain is generally the one that is affected most. |
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It's not that difficult to change them. Just done several of mine as some were over 45 years old. Now they were jammed. One radiator had been in the off position since it was installed. Have the system a flush at the same time too.
XX |
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By *vd1987 OP Man
over a year ago
Manchester |
"Where in the house is the cold rad in relation to your boiler? Is it the rad that is closest or furtherest away from your boiler?
If it’s the most far away then you may need a power flush of the whole system including pipes to remove all of the detritus and general crap from the pipes and the last rad in the chain is generally the one that is affected most."
It is the one farthest away from the boiler (bit even that isn't very far lol).
It's also the one that generally has the most air in it when I have bled it.
Either way think unfortunately gonna have to call a plumber |
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"Where in the house is the cold rad in relation to your boiler? Is it the rad that is closest or furtherest away from your boiler?
If it’s the most far away then you may need a power flush of the whole system including pipes to remove all of the detritus and general crap from the pipes and the last rad in the chain is generally the one that is affected most.
It is the one farthest away from the boiler (bit even that isn't very far lol).
It's also the one that generally has the most air in it when I have bled it.
Either way think unfortunately gonna have to call a plumber"
When you consider the network of pipes feeding water around the heating system then the last rad is generally the one to suffer. A full system flush should sortit, Draining the system doesn’t usually remove all the crap whereas a flush does. |
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What's the pressure in the system when cold? If it's too low, that indicates there is still air in there. Check your boilers manual for recommended settings. You might just need to top up the system with fresh, put the heating on, then bleed the air again. |
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close all other rads off by shutting the other side to the trvs
except for the 2 farthest rads closest to each other.
open and close the none trv valve on the issue rad do the same with the trv leave both open
this will force the water to the last 2 rads on the system.
now turn the system on
now close the none trv valve on the last rad so it forces all the water down the issue rad.
if its air locked it will force it out but not always.
run it until rad is red hot at return pipe
if the rad becomes hot
then rebalance the system out
on the non trv valve side open and close the valve a few times as you rebalance the system as it clears a few debris out of them. |
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it is that simple the only things that can cause a major issue.
is badly piped heating system
hot water tank robbing central heating system
and air locks
alot of these issues is caused by owners not maintaining there systems |
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By *vd1987 OP Man
over a year ago
Manchester |
"it is that simple the only things that can cause a major issue.
is badly piped heating system
hot water tank robbing central heating system
and air locks
alot of these issues is caused by owners not maintaining there systems "
I meant the turning it on and off again bit lol. I get my system serviced every year |
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By *elshyXOMan
over a year ago
Newcastle |
The pin being fully raised is normal when removing a TRV as the valve controls the pin. If all rads are getting hot & youve bled the offending radiator the system may need balanced.
To balance it, its as simple as using the TRV’s on the other rada to turn them off then blasting the heating. Hopefully you’ll get some gurgling & rumbling within 10-15 minutes, then the offending rad should start to heat up. Onces thats the case reintroduce the other rads turning them on one by one |
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By *rHotNottsMan
over a year ago
Dubai & Nottingham |
"Where in the house is the cold rad in relation to your boiler? Is it the rad that is closest or furtherest away from your boiler?
If it’s the most far away then you may need a power flush of the whole system including pipes to remove all of the detritus and general crap from the pipes and the last rad in the chain is generally the one that is affected most.
It is the one farthest away from the boiler (bit even that isn't very far lol).
It's also the one that generally has the most air in it when I have bled it.
Either way think unfortunately gonna have to call a plumber
When you consider the network of pipes feeding water around the heating system then the last rad is generally the one to suffer. A full system flush should sortit, Draining the system doesn’t usually remove all the crap whereas a flush does."
Can you do this yourself easily with a hosepipe ? I have a couple with this problem and the quote for a full flush is more than swapping out the radiator |
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With the other rads hot, feel the pipes that feed your suspect radiator, if they’re hot to touch the fault is probably with the valves, if not, the problem is elsewhere (could have a chunk of nasty at a t-piece, stopping the flow though- unless you have small bore pipe feeding it…then you’re fookered) |
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"When you consider the network of pipes feeding water around the heating system then the last rad is generally the one to suffer. A full system flush should sortit, Draining the system doesn’t usually remove all the crap whereas a flush does.
Can you do this yourself easily with a hosepipe ? I have a couple with this problem and the quote for a full flush is more than swapping out the radiator "
if you think your system can be dully flushed while plumbed in its a con job.
it cant
it means each rad must be taken of the wall to flush as much of the sludge out of the rad itself.
it dosnt always do it and it does mean a new radiator is needed.
you can power flush the center of a rad with a side power flush tool to fire down the the rad but you will be flipping that rad over often and also taking off the valves to get access.
that will take an hour to do a normal power flush lance wont do it
https://www.youtube.com/watch?v=Ru-nNFqBzqk
https://www.youtube.com/watch?v=5_1PdbtMMC0 |
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"it is that simple the only things that can cause a major issue.
is badly piped heating system
hot water tank robbing central heating system
and air locks
alot of these issues is caused by owners not maintaining there systems
I meant the turning it on and off again bit lol. I get my system serviced every year"
actualy no you dont and neither does any one else.
you dont adjust those valves twice a year to stop them sticking or blocking up.
you may get it serviced but you neglect those valves.
port valves are another failure on the system that arnt replaced eithe, only time you realise you have a problem is when its not working properly or the system is being taken of heat. |
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