I've found that fault, only once. The real fault was too much air causing the poor control box to work overtime to try to establish the flame, and taking the transformer with it.
Spares, have you tried something a bit high tech like typing "oil boiler spares" into a browser? (Oh, then pressing "enter" or "return", whatever you like to call it).
Spares, have you tried something a bit high tech like typing "oil boiler spares" into a browser? (Oh, then pressing "enter" or "return", whatever you like to call it).