Problem-alpha 240p-when hot water in use radiators get warm

[jezior]

Hi

I've got problem with alpha 240p combiboiler, When I use hot water (taps) the radiators get warm. (central heating switched off). I am thinking that might be diverted valve but not sure about it.
Please help me.

 

[gas4you]

Yes DV. Extremely common on these. Expensive to fix if you get someone in.

 

[jezior]

Thanks. I was going to change this part.
http://www.ezypart.co.uk/parts/part_id__2232
Should I change the flow valve as well ???
http://www.ezypart.co.uk/parts/part_id__2225

 

[gas4you]

No. Usually just the back half will suffice.