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Potterton water/heating boiler won't switch off when thermostat is turned down ?
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The 12 year old Potterton gas boiler in the loft remains 'on' (heating water and radiators) despite the livingroom thermostat being turned to zero and the airing cupboard (acl lifestyle) controller switching the heating and water off. Water temperature and radiators become extremely hot (far more... View more questions Search
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