Intermittent Hot Water...Help!

webrits · 10 Aug 2006

I've been having some intermittent hot water problems recently with my Worcester 280 combi.
More often than not the water runs hot in a few mins, but occasionally it can take 5 - 10 mins. Turning the tap on and off 'seems' to help but it still takes a while. Can anyone shed any light on this?

Many Thanks.

webrits · 11 Aug 2006

Anyone?

chrishutt · 11 Aug 2006

Sounds like a flow switch / diaphragm problem. You need to study the boiler manual if you want to deal with this yourself.

webrits · 11 Aug 2006

Thanks Chris.

Is it normal to have intermittent problems with either of these?

chrishutt · 11 Aug 2006

When diaphragms develop a split they will fail to respond to low flows but still work for higher flows, until the split gets bigger. It would help if you said whether your boiler has a diaphragm or a flow switch. The manual will tell you.

croydoncorgi · 11 Aug 2006

On the WB 280, it's a flow-switch, which should operate at 2.6 l/min.

If the boiler hangs around for a while doing nothing, then the demand light comes on, and it lights up immediately, chances are it's the flowswitch failing

Agile · 11 Aug 2006

Is the system pressure normal?

That is about 1.5 Bar???

Tony

webrits · 13 Aug 2006

Pressure was a bit low @ just over 1 bar. Topped it up to 1.5 now. Will that help?

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Intermittent Hot Water...Help!

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