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peter7463h7

Hello there
We have an eight year old Worcester RCH 24CDI boiler. Hot water failed a few days ago and a local recommended plumber diagnosed a faulty diverting valve. He replaced the diverting valve yesterday (using genuine Worcester spare parts, he says). After he'd left I noticed a small leak from the cold water inlet/diverting valve connection - about a drip every minute. He came back yesterday evening, and seemed to want to blame limescale or the internal layout of the boiler for not allowing a good connection. In his words, he's done, "everything by the book", greased the spigot, greased the O ring etc. I sensed a reluctance to dismantle and remake the joint. He then banged about a bit with a hammer and screwdriver to squeeze the joint together. He also tightened the two plates through which the connection passes. The drip stopped, but restarted about an hour after he left. It's now dripping at about a drip every minute and a half. I spoke to him on the phone this morning and said I'd contact him next week if the drip hasn't improved. I also telephoned Worcester, who said this is a routine repair for their engineers.

I don't want to tell the plumber his job, but does anyone have any idea why the connection might be leaking and possible remedies I might tentatively suggest to him?

Many thanks
 
Replacing water parts on older Worcesters can be a bit of a nightmare and new seals must always be used and well greased up with silicone grease.
Sounds like he has tried to reuses seals or poorly fitted the new ones in my opinion.
 

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