Gloworm 30Ci - Water discharge from pipe outside house

[adw99]

Hi please could i ask for some advice on a problem we have.

We have a Glowworm 30Ci combi boiler.

Unit was working fine then the pressure dropped down to 0, we can't find any leaks inside the house, no water stains or drips anywhere. All pipework run in upstairs floor voids.

We refilled the system and it repressurised but kept dropping.

We noticed that water is flowing from the external 15mm copper pipe outside the house at the back of the boiler.

We reperssurised again the boiler fires up ok hater water and or heating seem fine but then the pressure drops again very quickly and the system turns off.

I cant find an answer to this particular problem but will keep looking but if anyone has any advice we really appreciate.

 

[denso13]

Pressure vessel may need charging //www.diynot.com/wiki/plumbing:faq:faq7

 

[Gasguru]

Be prepared that the vessel hose is blocked and it can be a PITA to replace/clean out.

 

[adw99]

Hi thanks for your help

Had a friend of a friend out the expansion vessel is fine (phew £230 plus need to remove the boiler from the wall to replace) seems to be the pressure release valve is the likely suspect but there was a bit of head scratching swapping of bits. PRV scrapped and cleaned
Any road the boiler is working ok for now so at least we can keep warm and shower.

Will try to get replacement PRV tomorrow also the auto air valve which seemed to have a leak, both reasonably cheap parts and easy for me to fit

Will then be a process of elimination but beyond these parts the prices get very high

Again thanks again for you help and advice happy new year