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    Central Heating only works when Hot Water is ON

    Hi, I have a gravity fed system with 2 separate valves for hot water and central heating. Here's what's happening, and I'm really scratching my head here: The only way to make the central heating work: - Switch off the central heating from the controller. - Bypass the central heating valve and...
  2. A

    Central heating only works with Hot Water ON

    Hi, I have a gravity fed system with 2 separate valves for hot water and central heating. Here's what's happening, and I'm really scratching my head here: The only way to make the central heating work: - Switch off the central heating from the controller. - Bypass the central heating valve and...
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