protherm 80e,prolem,won't start,f1 display.
contacted gloworm,went through proceedure of checking pcb conn xt3 bottom black lead with multimeter(red prong to black lead,black prong to earth,setting on AC for 240 volts) in hot water mode.this did not work because when resetting the boiler it went to -4 then f1 immediatly, so i was told by the tech adviser that it was the ignition block,because everything goe's through this from the pcb,complecated.by the way the fan was'nt running either,no power to fan which comes from ignition block.
dave from oldham, September 2009