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combi boiler

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Darkstar1 | 12:12 Wed 08th Dec 2010 | How it Works
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combi stop heating just the water, c/h still working. now the boiler fires up even when the water is not running
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Oh dear, poor you. Mine works perfectly.
Could be the valve that gives priority to DHW is bust/stuck

Could be in the electronics

Doesn't sound a DIY job to me.
I had one of these before I moved (a good old Potterton now, thank God) and it was always playing up. 9 times out of ten it was something called a 'therma couple'?

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