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    Vaillant Turbomax 828E won't repressurize

    Hi The pressure on my 828E is showing zero. I've opened the cold water mains and the CH return valves but no water flows in. I know water is reaching the end of the fill loop (braided hose). What could be preventing the system from taking in water? Can low pressure in the CH system...
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    Vaillant Turbomax Plus 828E removing plate heat exchanger

    Hi After reading various forum posts, it seems likely that my plate heat exchanger is blocked and needs cleaning. I couldn't find any instructions to remove it, is it just a case of pulling the 3 wire clips and undoing the (awkward) nut? Also, is this legal for a DIYer? Thanks in advance...
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