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Mend Vaillant GB221H Boiler Heating Fault

Vaillant GB221H pilot flame keeps going out?

The pilot flame on the boiler keeps going out without warning? I am able to restart the pilot flame, & it will continue to ignite the boiler to give hot water & central heating, but intermittently goes out? Any ideas on what to check?

Ian
April 2010

Vaillant Vaillant GB221H Heating, Home Heating Systems Boiler Heating Fault

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Vaillant GB221H Pilot Flame Issues - Fixes