Can anyone help me, I have had hot water and no heating for a week now (it's been snowing today and v.cold). I have a potterton Performa 28 combi that is about 3 yrs old and so far have had 3 plumbers out all stating different problems! I am tearing my hair out wondering if anyone actually knows their stuff. The unit kept shutting down due to what seemed to be an overheat, the water temp was shooting upto 80 in a matter of minutes.
The first plumber changed the diverter valve to no avail then the pump (but then discovered only a new motor/turbine was fitted to the original pump body). He then suggested that both heat exchangers were the problem and he should replace them at an extortionate price!
As not convinced got second opinion from plumber who dissasembled the pump and found auto air vent causing vapour locks with consequent loss of pumping, advised complete new pump, as he couldn't do work for another week, we went to a third plumber to fit the pump, he disagreed with this diagnostic and although replaced complete pump we are still not getting heat in all our rads? System is not switching off though now and have hot water, plumber suggests air lock or sludge, however our system is only 3 yrs old, have bled rads, clear water and no air?? Please can anyone help with any other suggestions, I feel like everyone I call out, although corgi registered, just keeps guessing and in the meantime I still don't have central heating!
The first plumber changed the diverter valve to no avail then the pump (but then discovered only a new motor/turbine was fitted to the original pump body). He then suggested that both heat exchangers were the problem and he should replace them at an extortionate price!
As not convinced got second opinion from plumber who dissasembled the pump and found auto air vent causing vapour locks with consequent loss of pumping, advised complete new pump, as he couldn't do work for another week, we went to a third plumber to fit the pump, he disagreed with this diagnostic and although replaced complete pump we are still not getting heat in all our rads? System is not switching off though now and have hot water, plumber suggests air lock or sludge, however our system is only 3 yrs old, have bled rads, clear water and no air?? Please can anyone help with any other suggestions, I feel like everyone I call out, although corgi registered, just keeps guessing and in the meantime I still don't have central heating!
