wot diverter valve its not a combi.
if the boilers running which it must be if your getting hot water. (assuming your immersion heaters not on) it could be your circulating pump not running.
ned
December 2010
Timer on?
Room thermostat calling?
If both are on and calling, it comes down to the diverter valve.
Carefree
November 2010
I can answer this question...
potterton profile 50e water is hot but heating wont come on any suggestions?
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Try fixfault.com to fix home heating systems.