Im trying to fix a Ferroli sigma 40 60 heat only boiler. As soon as its powered on the main board trips. instantly. I disconnected the fan and it stops tripping, so im thinking simple enough change the fan unit. Measured the ohms and it reads 75 which sound about right. connected the fan to a plug and it runs fine and no tripping electric. Reconnect to boiler and it trips.
Boiler passes basic electric tests. Would that still trip electric board?
To be sure I checked the voltage coming off the pcb which I believe should be 240v.
At the pcb pins it is supplying approx. 130v at the cable connection ends for the fan its only 20v . So PCB looking a bit fried?
So separated the powered fan and powered boiler do not trip board, put together they trip the electric. Can anyone explain this?
Boiler passes basic electric tests. Would that still trip electric board?
To be sure I checked the voltage coming off the pcb which I believe should be 240v.
At the pcb pins it is supplying approx. 130v at the cable connection ends for the fan its only 20v . So PCB looking a bit fried?
So separated the powered fan and powered boiler do not trip board, put together they trip the electric. Can anyone explain this?