Two recent problems with mine: (1) boiler overheating and cutting out, traced to sludge accumulation in system and poor water circulation (solution - use sludge cleanser and flush system); and (2) failure to ignite, caused by cracked insultation on spark igniter wire. N.B. safety warning issued by HSE about these boilers, HSE Safety Notice 00/16, concerning possible dangers of delayed ignition. This boiler requires positive air pressure to ignite, not a vacuum as in more modern boilers. See http://www.ogc.gov.uk/embedded_object.asp?docid=1197
Jim Harvey
February 2005