Worcester-Bosch Junior 24i fault light but dolds pressure, no hot water, thudding

[sgannon60]

Hi, I have a Worcester-Bosch gas fired condensing combi boiler Greenstar 24i junior

The boiler keeps flashing fault lights, it's holding pressure but keeps flushing water through and making a big thud every 15 seconds and now hot water was being produced. I have coaxed it into working by putting the heating on 24/7 on low which is bypassing the issue and producing hot water. A plumber with expertise with Electric boilers suggested the Expansion Vessel needs replacing which 'might' resolve the issue.
My research so far suggests this is unlikely to be the issue and he was unsure how to check for the bladder being compromised or if there are issues with the valve. Thinking this complicates the matter, of could it be the fix I need?
Thanks
Steve

 

[chris watkins]

No, & we are sorry Steve but you will not get any further assistance on here because the problem is a part within the boiler casing & to work on it you need to be Gas Safe Registered.

Please go & find yourself a GSR heating engineer who will be able to fix the problem for you.

 

[IDCHAPPY]

Has anyone ever heard about needing to be Gas Safe Registered to tinker with boilers? Seems to be a fair few folk that just get ripped into it....
As Chris said^

 

[Dotty]

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