aye, thats what I am thinking… ain’t touching it now until I got the time to have another look at it again and until I have further advice for those who been in the field for years.
Did BTEC Electrical Engineering at College in the IT Industry a few years ago.. so do like to roll up sleeves and have a go as such.
Of course I don’t have a Insulation Test Meter or technical tools at the moment. But now another option would be to descale the old heater and refit that one and see it happens to this one too.