This boiler has a spark ignition system. That is when there is a call for heat the pump starts then the fan runs then the gas valve opens and the PCB generates a spark automatically. If no spark it's because there is a fault before the start up sequence gets to this point.
M
July 2010
Lighting instructions should be on the pull down lower part of front casing and instruction book if you have one.You should have a gas safe engineer look at your boiler as there might be a problem with pilot injector as wind should not affect it.
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