Worcester 24 cdi radiators get hot when turning hot water on

[carlosek]

Hi everyone, I'm new on this forum so please don't get upset with me if I am asking this question again, but having searched I haven't seen the same tread.
I have a Worcester 24cdi boiler that rarely gave me problems, but I have noticed that the radiators get hot when I open the hot water tap even tough the heating its switched off (not ideal in the summer).
I believe that it might be a faulty diverter valve that its stuck because of a worn diaphragm, but don't want to replace it until I'm almost 100% sure of this.
I have had a similar problem about 8 years ago as the hot water would only work if the heating would be on and it was caused by a faulty diverter valve.
Any help wold be appreciated.

 

[Crystalclear]

I'm gonna say...Diverter fault.


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moderator note: this is not a DIY fix.

 

[carlosek]

Thanks for your reply.

Will it be ok just to replace the diaphragm or will it be better to replace the whole diverter valve??

 

[St0rmer66]

In terms of labour it takes actually nearly as long to change the diaphragm. But for a passing valve it's usually the internals sticking because of dirt so I'd say the whole thing.

 

[carlosek]

Hi everyone,
Are there any recommended Worcester engineers in the North/west London area>>
Thanks

 

[Agile]

Its not a job that most engineers want to do on that model.

Many would suggest you get a fixed price repair from Worcester!

Tony

 

[Dan Robinson]

Its not a job that most engineers want to do on that model.

Many would suggest you get a fixed price repair from Worcester!

Tony

Not that bad a job usually. As long as one keeps track of the o rings and the general condition and access of the boiler is OK.

 

[Agile]

I let a trainee do one himself but under my guidance and it took about 165 minutes! But it was for a friend.

Only showing it to him to demonstrate why they are better left to Worcester.

But then my charging regime is rather different from Dan's and for longer jobs I lose out.

Tony

 

[Dan Robinson]

Two hours is about right as long as the old one isn't welded to the chassis with rust and scale.

I tend to book 3 hours on the calender.