Earth Fault

[Murdoch]

I would stop throwing good money away.

There is no fault

And don’t use the GSR again

 

[binky]

So now the electrian is saying, from the basic checks there is nothing wrong. If the boiler engineer isolated the boiler and is getting those readings then there's something wrong with the electrics in the boiler itself and now we need a electrician that is qualified to work with boilers

I doubt there's any problem with the boiler control board.