been out to this boiler no heating no hot water found pump was stuck and overheat had tripped freed pump reset overheat all running fine job done 3hours later phone call boiler as stopped working so off I go pressure dropped topped it back up no response noticed drip coming from expansion vessel nipped out side prv letting water out customer asked can you fix it yes but before I do lets find the fault found intermittent fault on flow switch and pressure switch so tells customer its not worth the parts and labour needs a new boiler answer to that was its a good boiler and its never gone wrong before ok no problem will price the parts told them price of parts answer was is that including fitting no that's the parts well can you get the boiler going without of them then we'll think about new boiler put my tools in the van gave them a card and told them to phone me if it gets cold