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how to diagnose vaillant gb 242 problem?

how to rectify problem of no ignition on boiler no green
or amber lamp on.not attempting to ignite or no gas
present.mains gas & electric ok.
michael quinn, August 2009
Sounds like a job for a RGI

www.gassaferegister.co.uk
will assist you to find an Engineer in yor area

www.elanar.co.uk, August 2009
link Click here to see other fixes for Vaillant.