If it helps, the the fan switching is controlled by the motherboard, when a tap is opened or heat is called for it starts the fan , flue pressure switch is made so pcb sequences the gas valve opening. so if all external switches are off the PCB fan switch must be at fault to run the fan.
All you get is a few flashes of orange but always a red light.
Recon PCB EBay Birmingham I think £80 exchange.
All you get is a few flashes of orange but always a red light.
Recon PCB EBay Birmingham I think £80 exchange.
