Gulfstream A-Class 30/OV

Am I the lucky one, the first problem listed. I have the above appliance and it gets as far as Fan on and sparking but no ignition. Its supposed to try 5 times but fails and flashes Red after first failure. Am I right in thinking that by getting to sparking stage after pressing reset button B1 all sensors etc are OK. I have 146v DC at gas valve. I appear to have electric down the earth wire on the Electrode spade if its removed from the spade. Any ideas. Cheers in anticipation.