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pilot lamp fails to ignite, potterton boiler profile 50el?

no voltage to gas valve on terminals t2 & t3, checked pcb fuse 1 amp and found ok.
Will I have to buy a new pcb?
I am not good on circuit boards
Allan, September 2012
It's simple pull out black control box replace new one write down which wire goes where ignition connect on side slid in ,it should work

ltd, September 2012
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