Can anyone help me please i have a baxi solo 2 which is really playing up ive had a few parts replaced already which has easily cost me around 400 quid and its still playing up. When turning the boiler on i have to switch on hot water to fire the boiler up this makes the water heat up, but when turning on the central heating the radiators dont heat up . When turning the hot water off on over ride (leaving central heating switched on) the whole boiler switches off ! the hot water will not come on again until switch ing off the central heating and turning the hot water on which then fires up the boiler again ?????? Please help !!!!!!!!! some one has mentioned the pcbboard and the potentiometer and leads might need replacing ????