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boiler wont ignite?

I have a vaillant VCWGB 242EH Bolier - There is no power to the fan. I have 3 circuit boards but dont know which one is which. Does anyone have a diagram of the circuit boards or can anyone tell me which one is the ignition board.

The fan is good and all the fuses are ok. Thank-you for your help and assistance. Terry
Terry, August 2008
The PCB with a black control mounted to / jutting out from the left hand side is listed as the flame supervision device (ignition).
Hope this helps

Robin S, August 2008
link Click here to see other fixes for Vaillant.