Hi I am having problems with my boiler vokera syntesi 35. I has been locking out code 08. I had the thermistor changed on it but its still locking out. it now developed another problem the pressure keeps dropping. The chap who fitted thermistor said changing pressure valve and a service MAY solve the problem but he cant guarantee it. Everytime he comes out it costs me money and the problem is still there. Please can someone out there advise on what I should do??????
ps how much does a pressure valve cost and what is a decent price for fitting it???
ps how much does a pressure valve cost and what is a decent price for fitting it???
