Worcester Greenstar losing pressure

[terryplumb]

Yes, I've already tried that. See about 6 posts back.
I take your point about an internal pipe leak check and will report back next week.
Have a great weekend.

Sorry ,I forgot I had asked ,and you had answered already...it's an age thing

 

[muggo]

Hi Terry.
I'm now having to repressurise every 5 or 6 hours to keep my heating working.
I've just gone up some steps where the condensate drain goes into a gutter. Tapping the pipe produces about 8 or 10 drips of water.
I've pressurised the boiler to 1.8 bar, left it 10 minutes and it again produces 8 or 10 drips of water when tapped & the boiler pressure has dropped to 1.7 bar already.
The boiler is stone cold, hasn't been on for 5 hours & is still dripping (slowly) from the condensate pipe.
What do you recommend I do, please? I don't want to be cold over Christmas.

 

[terryplumb]

Your boilers heat exchanger is perforated ,not cheap to replace and you would need a GSR engineer to do it.
Is it still under warranty,it should be if only 2 years old ?

 

[muggo]

Your boilers heat exchanger is perforated ,not cheap to replace and you would need a GSR engineer to do it.
Is it still under warranty,it should be if only 2 years old ?

It was commissioned on 21 Oct 22 and serviced on 9 Feb 24. Losing pressure since winter 23 and i can get a GSR to confirm. Slightly over the service schedule, so are they going to play nice, in your experience?

 

[terryplumb]

Only one way to find out. Who fitted the boiler ?

 

[muggo]

Only one way to find out. Who fitted the boiler ?

It was a BOXT installation and I have his details. Is that the place to start?

 

[terryplumb]

Yes ,if they supplied and fitted the boiler they would be your first port of call.

 

[muggo]

Yes ,if they supplied and fitted the boiler they would be your first port of call.

Worcester Bosch are sending an engineer out. I’ll keep you posted.

 

[terryplumb]

Yes ,please do.

 

[muggo]

The WB engineer replaced the heat exchanger, but didn’t find evidence of a leak from it. I’m not sure if the expansion vessel was replaced.
Anyway, it’s still losing pressure, although a little slower. I’ll ring them tomorrow and see what they say, after I’ve checked for leaking from the condensate pipe.