Ariston Clas HE Evo 1P1 Error message

[Anderson69]

Hi Guys, Im hoping for some info opn this, i have the aforemetioned boiler sytem which is 13 months old and been serviced and has a magni clean attached, pressure at 1.5 bar and central heating working fine, water is also to an extent basically what is happening and has done for prob 6-7 months on occasion when turning off the hot water tap i get the 1P1 Error for a few seconds say 30 and then it goes off, yesterday i got it twice but when turning on the hot water i get the error again about 30 seconds then the boiler fires up and water running hot as i would expect?? Any ideas i contacted Ariston Tech and they have said that it possible a debri/sludge build up and its causing the pump or heat exchanger to think its low flow, ive also contacted mt neighbour who fitted it and he knows the ariston engineer for our area so has called him it has a 5 year warranty but im worried now surely i dont need a new boiler after 1 year!! My neighbiur has suggested he puts a cleaner through it and see if that helps, it is a new boiler onto a old system with a few new rads but about 3 rads that are 15 years possibly more old should i also replace them just to help reduce the sludge factor?? Any help or advice would be appreciated

Thanks in advance