My Ferroli Maxima 35c boiler trips the mcb when the on/off button is pressed. I unpluged both pumps and tried again but still trips the mcb. I then removed plug x1 from the pcb-this time the mcb stays on. Is the pcb banjaxed and/or anything else connected to it such as the gas valve?
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Ferroli Maxima 35c
- Thread starter parabat
- Start date
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