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valliant boiler

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sl1ckst3r | 19:34 Mon 12th Feb 2007 | Home & Garden
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i have a valliant boiler and the pilot light went out.
now it tells me error f21, and it wont ignight.
can anyone help pls
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According to my instruction book there is not a f21 code! The codes jump from f11 to f22. The Vaillant help line is very good, I used it this year & they gave me very good( free) advise. 0870 6060777

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