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Horstmann channelplus model H37 - ch won't come on?

hi - have just tried to fire up my central heating and it won't work. I pressed the middle button which is the heating button, and have put it on 'on', but nothing is happening. Can anyone help please?

October 2009

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possible a faulty motorised valve

October 2009

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horstmann economy 7 heaters not coming on?

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