The boiler isn't working. The programmer is showing two red lights. These are the one's to the right of the slider controls. The CH one is on constantly and the one for hot water flashes, regardless of where the slider control is positioned. Pump is running and fan attempts to run/switches off...
Thanks for the replies. The plumber did say that if we went for the strainer and filter option we would be able to carry out periodic cleaning ourselves. He's sending us a quote so I'll probably chat with him more then. He was recommended to us and seems a decent chap.
Yesterday the plate heat echanger was removed and flushed for the second time this year. There are obviously major problems with this system as I was shown the black flakes that were removed. The plumber who carried out the work said that due to the age, size and condition of the existing...