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HW only works when CH is on

Posted: Sun Jan 27, 2008 4:42 pm
by paul_vw
Hi, just a little help required here,
when requiring HW, we have to put on the CH, can anyone advise the fault?
the boiler is made by arrow and model says C24
thanks

Posted: Sun Jan 27, 2008 5:52 pm
by htg engineer
Never heard of that make or model of boiler.

What type of boiler is it ? a combi, back boiler etc
Do you have a tank/cylinder ?

Posted: Sun Jan 27, 2008 8:34 pm
by paul_vw
Hi, i've lost the plot, its a Alpha CB24-CB28 combi

Posted: Sun Jan 27, 2008 9:18 pm
by htg engineer
DHW switch / diverter valve fault. Would be best getting a heating engineer in to repair.

If you are competent, as you are not breaking any gas supllies, removing and combustion seals etc you could attempt this yourself.

Read your boiler instructions - it tells you where the diverter valve and DHW switch is, how to remove and replace etc.

Bearing in mind I only know what you've told me, for an accurate diagnosis, get a heating engineer to take a look.

Hope this helps

Posted: Sun Jan 27, 2008 10:48 pm
by paul_vw
thanx, think i'll take your advise and get engineer in