and just to let anyone when i say i changed the pcb board i ment the flame iginition pcb .. im thinking it could be a problem with the main regulation pcb board but dont think so cos i did see the piston working for a while .. im so confused
can anyone help.. i have a biasi 24s with no hot water , ive changed the diverter valve and the pcb board .. the central heating is working fine . the water from the taps are flowing fine just freezing cold . i took the microswitch off for the hot water and simulated the boiler working and the...