HW only works when CH is on Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[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

[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 ?

[paul_vw]

Hi, i've lost the plot, its a Alpha CB24-CB28 combi

[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

[paul_vw]

thanx, think i'll take your advise and get engineer in