Worcester 28CDi

diyman75 · 9 Feb 2006

Hi, I've got a worcester 28cdi, and the pressure keeps rising. I keep draining some water out of a radiator, to take the pressure back down to 1 bar. Overnight, or during the day, it then rises back up to around 2.5 bar. Is the heat exchanger the problem? Is this something I can buy and fit myself?

Hope someone can help. Thanks!!

ollski · 9 Feb 2006

Is this one with a internal filling loop like the 24cdi or external?, if its external the disconnect it and if it still rises then suspect the dhw heat ex.

diyman75 · 9 Feb 2006

Yep, it's an internal filling loop.

Thanks.

ChrisR · 10 Feb 2006

Close off the mains water inlet at the cock under the boiler, then test it overnight. If it stays down suspect the dhwhe - they do "go" on these.

With the right tools, knowing what might leak and how to avoid it, all these jobs are OK for "us", but could give grief to a first timer.

diyman75 · 10 Feb 2006

Thanks, will try that tonight.

diyman75 · 12 Feb 2006

Cheers, did what you suggested. Pressure stayed same all night. Must be the dhw heat ex. as I thought.

Thanks for your input.

Cheers.

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Worcester 28CDi

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ChrisR

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