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Oct 28, 2018
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Morning all,

I have a slight leak issue with my combi boiler. I have noticed that there seems to be some water leaking from the bottom of my boiler, when I removed the cover just to see if I could spot the source I noticed there wasn’t really anything obvious until I accessed behind the controls. Looking at the manual of the boiler it appears to be the 3 way valve and what could be the o-ring inside breaking down. I’ve attached some photos to show what I have found. I have an engineer coming out but I wanted to just get some advice and idea of what this may cost?
 
Yes your diagnosis is correct it will need replacing and will eventually short the motor out a GS engineer needed.Kop
 
Put the cover back on your boiler and please get a Gas Safe Engineer our. Your case is an integral part to the whole system. Please do not open it again.
 
Put the cover back on your boiler and please get a Gas Safe Engineer our. Your case is an integral part to the whole system. Please do not open it again.

I have an engineer coming out and I have put the cover back on. I had no intention of actually doing any work to the boiler myself. I am however an engineer in a different trade so didn’t feel undoing two screws to remove the cover to have a look a problem.
 
I have an engineer coming out and I have put the cover back on. I had no intention of actually doing any work to the boiler myself. I am however an engineer in a different trade so didn’t feel undoing two screws to remove the cover to have a look a problem.
However what you didn’t mention is the seal on the inside of said case which you have now disturbed. Not saying you are not a competent person. Saying you shouldn’t be taking it off. But glad you have an Gas Safe attending
 

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