Hot Water Problem

[gunnersfan]

Hi all,

I have a Worcester combi boiler, it is working OK for the central heating but only seems to be heating the water when the central heating is boosted and fired up. Any suggestions as to what the problem could be would be appreciated.

 

[45yearsagasman]

Wouldn't be a Cdi by any chance would it?

 

[c9550927]

not the same boiler but just throwing it out there, i had the same issue with a Vailliant, it was the diaphragm in the diverter value that was gone.

When you request hot water, check the pipes (touch them); see if right pipe (under boiler) is getting warm.