Finally found leak in Glowworm ultracom 30cxi

Digimon · Aug 1, 2021

So I've had a leak in this boiler for approximately 6 months. I hired an engineer to resolve and he suggested replacing a large black valve (I forget the name). After having the valve replaced, the leak appeared again around a week later. I tried to monitor so I could identify where the water was coming from and after a few weeks, I finally found it. I've uploaded a video here, can anyone tell me what needs to be done to resolve this?

I was charged quite a lot for the valve replacement yet the problem remains.. what should I do now?

Deleted member 120897 · Aug 1, 2021

In my opinion you still need the services of a qualified engineer (gas safe in uk). If it’s not the diverter valve (black plastic thing) then get whoever replaced your valve back as it’s been misdiagnosed.

ShaunCorbs · Aug 1, 2021

How much did you pay ?

Digimon · Aug 1, 2021

@Undertrained - seems a little illusive at the moment, but he says it's due to work load. I'll keep trying to get him to return.

@ShaunCorbs - around @180 parts and labour.

Digimon · Aug 18, 2021

I was told that it could be the
hydroblock that’s leaking.. any idea if this could be the issue? What kind of costs would I be looking at?

king of pipes · Aug 19, 2021

Wow it's not hard to see that get the engineer back as the problem hasn't been rectified obviously, if you are struggling to find a good engineer ? get a manufacturers repair done don't leave it to long either 🥴 kop

Digimon · Oct 3, 2021

UPDATE:
The initial plumber seems to all but disappeared after having tried to contact him. After several months of looking for the leak I believe I've actually found the real leak. He replaced a valve which turns out did not stop the leak. I've removed the first video and uploaded here:

Please can someone help me identify what work needs to be done?