Hi, on the above boiler we had a PCB fitted to replace a fault (Demestic hot water mode). This produced a flashing neon no 6 Flame failure / or blocked Condensate Drain. On re-setting the boiler we now have no neons except power on. No hot water or heating. I have just ordered an air presure switch at £20. Trying the cheap options first. Heating engineer returning tommorow. Has anyone got any suggestions? Thanks in advance. Dave

Dave D, August 2010

Thanks for you reply, all conections polarised. Dave

Dave D, August 2010

double check you have all the contations on the pcb right.

erj, August 2010