Our boiler stopped functioned properly after we had a towel heater moved. We cannot have just hot water and have the heating turned off. The heating seems to be on all of the time even in the hot water only setting. A plumber took one look at the boiler and seeing that the switch did not seem to be working, said it would need a new printed circuit at a cost of £180 + VAT and labour Over £400 total. Does anyone know if this sounds like a circuit problem or might there be another solution? Thanks