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Central Heating Buzzing - What is this component ?
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If your not technical, then it might be best to replace the board if you can get it from the boiler manufacturer.
I would certainly advise to use caution when working in the boiler, PLEASE make sure you turn off the power to the boiler, as there will be mains voltage in there.
Simon
2 years on & I guess it would be sorted by now.Not Again0
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