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Mend Vaillant VCW GB 242 E H Boiler Central Heating Gas Supply

how can i get my vcw GB 242 E H to fire up?

boiler is used for central heating only no hot water connected, boiler runs, fan runs pump runs but no sparking,
have gas at boiler cock, link between 3and 4 pressure at one bar

danny
August 2008
To Andy n,
Thank you, No 240 V at ignition transformer,changed supervision circuit board and pressure switch. All working.

danny Q
August 2008
check presure switch is working and tubes are clean ,check venturie

andy n
August 2008

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