Hi there
I've got a similar problem, my boiler won't ignite. I've checked the power to the pcb's and when the connections to the fan safety thermostat and air pressure switch are connected to the pcb's the voltage drops from 235 to 1.8. When disconnected the voltage goes back up, just wondering if you've any ideas, would really appreciate some help on this. It's a Biasi Grada M90F.24S.
Many Thanks
Glen
I've got a similar problem, my boiler won't ignite. I've checked the power to the pcb's and when the connections to the fan safety thermostat and air pressure switch are connected to the pcb's the voltage drops from 235 to 1.8. When disconnected the voltage goes back up, just wondering if you've any ideas, would really appreciate some help on this. It's a Biasi Grada M90F.24S.
Many Thanks
Glen