Central heating system drained, leaks repaired and now gushing flowing noises in radiators and pipes

[dancinplumba]

Hi. Thank you. My room stat is in the lounge. I don't know what an open vented system is! I suspect (not knowing much about central heating systems) that the noise is connected to the new TRVs as it's too much of a coincidence that the problem started when these were installed.

hi then the lounge rads DO NOT REQUIRE TRVS, get your plumber back, remove the heads temporarily

 

[dancinplumba]

On a separate pump it's straightforward, there's a manual selector on the pump. Don't know if it's the same on a combi, or if done via the software settings (if it's possible at all). Maybe one of the experts will tell us.

needs to be GSR to remove cover on boiler

 

[Riley]

Why people insist on having a trv to fight the thermostat I’ll never understand

 

[king of pipes]

I would say your system has trapped air in it needs venting while the boiler is off topping up and balancing this can easily take a good few hours. Kop

 

[Rob Foster]

To get rid of trapped air ina heating system shoot it up with a blast of mains pressure water in thro a drain off connected to outside tap and jubilee clip on mt/drain off. Give it a few squirts go round with drain key
Nearest rad first. This will blow the set out nicely , n0t too much pressure just of and on , get pump running as well .. job done ...a Blast like this never fails ...Rob Foster aka centralheatking

 

[dan_the_plumber]

Are all the Lockshields fully open. If they are turned down they can make a noise. Just open them all fully?

 

[Martell]

Hi. I missed the very latest replies, sorry, as I didn't receive any alerts. I phoned the plumber a week ago. It was a difficult conversation. He's not interested. When I pressed him, he said he'd phone me, but he hasn't. The radiators are now switched off in the lounge as the noise of gushing water circulating through the pipes and rads is unbearable. I'll need to find another plumber. I'm quite stressed as I'm waiting for surgery and I'll need the heating on. The support I've had on this website proves there are great plumbers out there, but I'm not being over dramatic when I say that this one has ruined my life.

 

[Martell]

Are all the Lockshields fully open. If they are turned down they can make a noise. Just open them all fully?

Thank you, yes, I understand they're all open

 

[Martell]

To get rid of trapped air ina heating system shoot it up with a blast of mains pressure water in thro a drain off connected to outside tap and jubilee clip on mt/drain off. Give it a few squirts go round with drain key
Nearest rad first. This will blow the set out nicely , n0t too much pressure just of and on , get pump running as well .. job done ...a Blast like this never fails ...Rob Foster aka centralheatking

Thank you. I hope another plumber will be able to resolve the problem

 

[Martell]

I would say your system has trapped air in it needs venting while the boiler is off topping up and balancing this can easily take a good few hours. Kop

Thank you. Hope to get another plumber soon to resolve the problem

 

[Martell]

Why people insist on having a trv to fight the thermostat I’ll never understand

Yes the system was quiet til 2 new TRVs were fitted in the lounge (I didn't ask for them)

 

[Martell]

Why people insist on having a trv to fight the thermostat I’ll never understand

Yes the system was quiet til 2 new TRVs were fitted in the lounge (I didn't ask for them)

needs to be GSR to remove cover on boiler

Thank you. Yes I'll get another plumber and ensure he's properly qualified.

 

[Rob Foster]

Thank you. Hope to get another plumber soon to resolve the problem

I will not do any harm to keep bleeding the rads , sometimes the air lock will go away like magic, turn heating off and on for periods of 30 mins and bleed rads ...you never know you might get it on your own
Rob Foster aka centralheatking

 

[Harvest Fields]

Do me a favour matey. Put the heating on and check to see if the side with the trv on gets hot first or the other side. You may have done this already?

 

[Martell]

I will not do any harm to keep bleeding the rads , sometimes the air lock will go away like magic, turn heating off and on for periods of 30 mins and bleed rads ...you never know you might get it on your own
Rob Foster aka centralheatking

Thank you very much. I'll do that.

 

[Martell]

Do me a favour matey. Put the heating on and check to see if the side with the trv on gets hot first or the other side. You may have done this already?

Thank you very much. No I haven't done that, but I'll let you know.

 

[fixitflav]

Yes the system was quiet til 2 new TRVs were fitted in the lounge

If you open the TRVs fully (anticlockwise) or as suggested in #4, remove the heads, the system should be as it was before. If there's still a problem it sounds (literally!) like something else has been done, which the plumber isn't telling you about. If he's not prepared to come back and look at a system he's worked on I'd question his competence.

 

[Martell]

Hi again. All the rads th

Do me a favour matey. Put the heating on and check to see if the side with the trv on gets hot first or the other side. You may have done this already?

Hi again. All the rads that have TRVs fitted warm up at the TRV end first, except one radiator in the lounge. On this radiator, the TRV has been moved from one side to the other (it might also have been replaced). I've attached a photo! I believe this is the only rad in the lounge (of 3 rads) that had a TRV fitted when my new boiler was installed 3 years ago. Sorry I'm relying a lot on memory! The reason I know for sure that the TRV has been moved from one end to the other is because I have an old photo with that rad in it!

 

[fixitflav]

ll the rads that have TRVs fitted warm up at the TRV end first

On my quite old Honeywell TRVs they must be installed vertically on the flow, horizontally on the return. Don't know if yours are same, but if fitted wrong it might have something to do with it. But if it's wide open it shouldn't affect anything (in theory).

 

[Martell]

It's fixed!! The mains water supply was off yesterday as maintenance was being carried out in the area. I don't know whether this has anything to do with my issues. Anyway when the water supply came back on I took your advice and bled the radiators again. I got air out of the kitchen radiator! I put the heating on and it was a lot quieter. I bled the radiators again and now it is back to normal and the rads and pipes are quiet. I've checked it this morning and it's fine. I can't thank you all enough. Not only did you give me advice, but you never let me feel I was alone with the problem. You really are amazing!