Pressure gauge shoe pressure under one bar

[Selvaraj]

I have main heating with advantage invented hot water cylinder.

The pressure on the gauge goes to less than one bar every week.
I have to bleed certain radiors every week and they have air coming out.
I have also noticed mixed value in shower is too tight

Is all these due to single problem?
Why do I get less than one bar pressure every week?
Please expert help with solution

 

[SimonG]

Nope.
You either have a leak or an expansion issue.

 

[Selvaraj]

Many thanks
How do we find out where the leak is ?
Can you share the contact of plumber ?
Secondly how do I fix expansion issue?
I’ve got expansion cylinder one for hot water and one for cold water

 

[Ric2013]

Can you share the contact of plumber ?

If you let us know which town you live in, we can see if any of us are local to you.

 

[centralheatking]

Many thanks
How do we find out where the leak is ?
Can you share the contact of plumber ?
Secondly how do I fix expansion issue?
I’ve got expansion cylinder one for hot water and one for cold water

Selvaraj wait for an unvented expert you must not get involved in expansion vessels, they run at relatively high pressures and contain hot water and need skilled engineers to set them up. You may not have a leak as you percieve. You need not just a plumber but an unvented certified plumber.
centralheatking

 

[Selvaraj]

If you let us know which town you live in, we can see if any of us are local to you.

I live in Reading.
Can you please help
[automerge]1576004676[/automerge]

Selvaraj wait for an unvented expert you must not get involved in expansion vessels, they run at relatively high pressures and contain hot water and need skilled engineers to set them up. You may not have a leak as you percieve. You need not just a plumber but an unvented certified plumber.
centralheatking

I live in Reading.
Is any unvented certified plumber in this area ?