Radiator still warm when switched off

[BIGPAUL09]

Hi all, newbe here. Just replaced a o ring on the ideal isar he30 boiler diverter valve manifold and all went great but now the boiler displays 0 on the panel but the radiators are still getting warm when switched off. Has anyone got any ideas what is going on, cheers,

 

[WC1]

Hi Paul, send your gas safe number to admin
to get an answer to your question.

 

[ShaunCorbs]

As above can you send me your gs reg number