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how to fix timer on Saunier Duval boiler?

The timer on my SD boiler doesn't go around as it should. I can hear it ticking when I put my ear close and if I turn it to the correct time manually the central heating will kick in. Saunier want £100 for a replacement. I am tempted to take it apart and look at it. Anyone got any advice?

Barry Latchford
August 2008
Saunier DuvalHeating, Home Heating SystemsBoiler Hear Turn
my timer does not goaround but turns on when i turn by hand

ant
May 2010
burn it and put something good in its place

.
August 2008

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