I have a combi Vokera Excell 80SP heating my running water and radiators water also mixer shower valve. I am having some probs, first the boiler being doing this over the last month but more common now. Before constant hot water now hot for 1 min then cold for one minute. Now the Shower. Mixer valve feeding the hot and cold water together regulating temp with the valve. before the boiler prob it was hard in controlling the same temp varying all the time. Any help on these ? before i call the man to fix so i have an idea what is going on before the work.
Thanks
Gary
Thanks
Gary