Water drip through a tundish

[mitaka.bs]

Hello everyone.
I have a unvented system at home with Range Tribune HE tank. Recently noticed that there is a cold water running through the tundish .
I called a local plumber to look at it - he checked the potable white vessel and said that needs recharging which did to 3 bar ( as stated on label on it)- water was sill dripping. Then i have replaced the cartridge of the Relief valve- 6 bar on the Multiblock ( model TS301 -old type) and Cartage of the Pressure Reducer Valve - no result -water still dripping. I have noticed when a hot tab running and hot tank gets refill the dripping tends to slow down and when there is not usage of water seems to get rapid. I am running out of options.
Is anyone able to help me please?

Thank you in advance

 

[ShaunCorbs]

naughty naughty anything to do with unvented you cant do or touch you need to be g3 qualified

best to get a competent g3 engineer in

 

[SimonG]

Yes get somebody who is qualified to work on unvented cylinders.

 

[mitaka.bs]

I did , not once but twice and non of these plumbers were able to fix it . That's why i am asking for other opinions.

 

[plumben]

The most you can do it to turn off the heat source, and get a g3 qualified plumber to sort it out

 

[ShaunCorbs]

I did , not once but twice and non of these plumbers were able to fix it . That's why i am asking for other opinions.

so you decided to do the work your self thats how i read your post and the only thing i can advice is to post up in here [DLMURL="http://www.ukplumbersforums.co.uk/im-looking-plumber-gas-engineer/"]I'm looking for a Plumber or Gas Engineer[/DLMURL] but must be g3

 

[mitaka.bs]

I have not done it myself . It has been done by a plumber, which was well expensive. I was just trying to explain what parts have been replaced.

 

[SimonG]

I have not done it myself . It has been done by a plumber, which was well expensive. I was just trying to explain what parts have been replaced.

Not what you said in your first post

 

[Dotty]

Job 38.11