Edit: Just saw your reply after posting, Paul. Hmmm, doesn't quite match what I can see, but I'll see if I can apply this information to what I can see. Thanks.
It's owner does indeed plan to get it repaired. My reference to launching it out of the window was a comment on the frustration of igniting an old-skool boiler - you would think the manufacturer would have at at least labelled the controls.
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