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Contributor
36 Answers
- Posted on Jan 25, 2010
Re: Its a vaillant condensing gas boiler, it is showing...
F:28
air in gas
gas rate low
could be gas valve faulty,ignition transformer,ignition cable.
if there is a spark then its your gas valve,if no spark then check continuity on harness and spark generator,also check earth to appliance
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