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rcd trip on earth faults. So you have a fault to earth somewhere.

Remove your cable from the boiler, check continuity between your cable wires L-N,N-E,L-E and you should get open circuit which means your cable and plug should be fine, any readings and your cables or plug has a problem. check continuity between the connection terminals on the boiler as the cable, if you get a reading between L-E OR N-E then there is def a fault on the boiler. (although this wont test all the boiler)

If you plug other items into the same plug socket and they dont trip the rcd then its not the fixed wiring.
 
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i dont think the boiler has an off switch so its a different test yeah ?

A quick test at the plug will let you know whether the wiring you put in is at fault or not ... if it's popping fuses after that then it could be down to whatever goes on in a pcb after it's given life 🙂
 
one thing to check which i have seen happen before is when it gets wired no stray cuts of wire have dropped into the electrics box which could cause a short.

Had a couple of worcesters go like this, turned out the sparks on site would pull the cable into the boiler and strip it over the pcb and drop strands of wire all over the place. Bang!! thankfully worcester bosch engineers are very nice and it got sorted for free. The sparks got told it had cost £200 each boiler and he would have to cover the cost....... do you know supprise, it didnt happen again 🙂
 
AFTER ALL THAT !!! IT WAS A BLOODY LUMP OF PLASTER WHICH FELL ON A SOCKET HANGING OFF WALL, ON THE OPPOSITE SIDE OF ROOM I WAS WORKING !!!!!!!!!

found this by turning off consumer unit and back on, RCD back on, and turned each breaker on individually until one of them tripped without boiler wired up(kitchen sockets)

at least I didnt do anything wrong and boiler is ok(i hope so anyway), all that stress for nothing !
 
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AFTER ALL THAT !!! IT WAS A BLOODY LUMP OF PLASTER WHICH FELL ON A SOCKET HANGING OFF WALL, ON THE OPPOSITE SIDE OF ROOM I WAS WORKING !!!!!!!!!

found this by turning off consumer unit and back on, RCD back on, and turned each breaker on individually until one of them tripped without boiler wired up(kitchen sockets)

at least I didnt do anything wrong and boiler is ok(i hope so anyway), all that stress for nothing !

Good thing is you have folk here who have your back Gerry and are willing to help however they can 🙂 Glad you got to the bottom of it 🙂
 

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