Worcester Greenstar Boiler- Low pressure

[belshill]

Hi

I am really struggling with my boiler. Keep losing pressure for the last week. I have to top up at least 3-4 times a day.
No signs of a leak. Converted the garage 2 months ago, but this is happening now- not sure whether it could be a leak there or its the boiler.
Isolated the boiler from the main system, pressure dropped by about 0.5 bar, once I opened up the valve, it dropped all the way.

Please help!

 

[townfanjon]

Ideal logic ?? maybe
.

 

[scott_d]

Have you added extra radiators?

 

[belshill]

Yes added an extra radiator. It’s a Worcester Greenstar

 

[cjg]

sounds like you have a leak, re check any new pipe work you have done.