Hello guys this is my first post . I have a two year old sime Ecomfort 30HE combi boiler. The top LED is flashing orange which acording to the user manual indicates no water circulation . The heating cuts off about every 10 mins then I have to re light the boiler but I always have hot water . A heating engineer changed the pump but it has not helped. There is no loss in water pressure (2bar).Can anyone help... thanks