Viessmann Vitodens 100 Boiler Hot Water But no Heating

Hi Everybody,

I have installed Viessmann boiler model Vitodens 100 five years ago. I have not faced any problem in terms of its performance until now but today I have observed that after turning on the tap I am not getting the required hot water. What should I do? Need help on urgent basis.

Thanks

Richard

Hi Richard, if you turn on the tap & find you are not getting the required hot water, it might be due to the blockage of the diverter valve. In case of getting the hot water but no heating then, you should check all time clocks & controls. If everything else is okay then, it is almost definitely the case that the diverter valve is blocked open in the heating mode. After diagnosing the problem, it is advisable to call out a registered engineer in order to replace the boiler’s diverter valve.