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vaillant vuw 242e?

fan starts up but nothing else happens then goes to lockout,i have linked the pressure switch out but will not fire up,no spark at electrode as well
dave, November 2007
have tried all them still no joy,electrodes are not sparking, boiler goes through sequence then goes to lockout

dave, November 2007
I had the same problem British Gas came today and fixed it, there was a blockage in the tube

deb6789, November 2007
Most probably is the APS. Check that there is voltage from the board to the switch, check AP tubes are intact and venturi's are clear of obstruction whilst your there.

MrA, November 2007
link Click here to see other fixes for Vaillant.