hi thanx 4 the reply
sorry again for my ignorance but could you specify what the abbreviations mean
also the fan light stays on constantly when the hot water tap is on so im not sure if its even heating the water
thanks again
we have had this boiler for at least 10 years now and it has been having problems with going cold whilst the shower was running and then warming up again etc. but the radiators seemed to be fine all the time
now there is no hot water at all and it doesn't seem to even have the heating now...