Error code e119

[Bashmsn]

Hi hope someone can help me. I have a baxi boiler with error code E119 after looking it up i have managed to repressure the boiler but again within day or at time hours the error code reappears.

Every time i repressure it i turn the knobs off as it goes onto bar 1/2. What am i doing wrong or is there a leak
In the pipes somewhere?

 

[gigz]

Yes you have a leak, with the heating off and cold, pressurise to 1 bar. Turn on heating, if the pressure rises to 3 bar (takes a while) the expansion vessel needs looking at. Check the copper pipe on the far right of the boiler(it should go outside) for drips. Then check all the rad valves/pipework you can see. It doesn't take a big leak for the pressure to drop.