M
moony
anyone seen these? we went on a course for fault finding and commissioning and were given a card that you insert into the block connector for pcb, instead of using the pins off your multi meter on the block you then use it on little holes on the card which is labelled for the different components gasvalve gv1 and 2 ch 1 and 2 dhw 1 and 2 etc etc. save counting the wires , the card covers a range of the latest boilers - dont think worcester are giving them out willy nilly but hey we got one and they come in really handy so keep a look out.