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biasi prisma 24s

  1. JBseymour

    biasi prisma 24s DHW only luke warm

    CH piping hot Plate exchanger very clean defiantly not blocked DHW flow switch 'actuator' diaphragm is sound (no splits) and the diverter valve is working correctly (stripped down and pressure checked -in DHW mode it doesn't leak back into CH circuit). But... I need to turn the kitchen hot tap...
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