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Baxi Combi 105 HE - refuses to reset?

I have a Baxi 105 HE, and the 30 warning light was flashing, and it refused to light.
Now after thawing out the condensation drain pipe and several more attempts at re-lighting it, there are no warning lights and the boiler does not even go through the ignition cycle.
Anybody got any ideas?

Ian Aldridge
December 2010

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try turning power off to the boiler and then back on again

December 2010

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