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vailiant eco tech combi 824 boiler?

How do I find the changeover diaphram as I can get heating but no hot water and have been told that you can release it with a screwdriver but need to locate the unit to do this.
Andy R, February 2012
It has an electrically operated diverter valve not a diaphram, you could remove the diverter head and try to manually operate it but if you dont know how dont attempt it

bill, February 2012
link Click here to see other fixes for Vaillant ecoTECH combi 824.