AXBB charge pump fault

[john swift]

The belt and braces approach of adding a diode across the relay coil works for me
( As long as you have it the correct way round )



I would look for a wiring problem that could of shorted the +24V to the AXBB output

As semiconductors fuse faster than expensive fuses thats supposed to protect them
you could try adding a 22 ohm 1/4W resistor in series with the relay coil
( the resistor should only fail if the relay coil is shorted )

The only issue I would expect with tripping the RCD will be corrupting the PC hard drive
If you have not shut the PC down

John