domestic hot water

  1. N

    Vaillant EcoTec 630 plus boiler turns on for central heating but not providing domestic hot water

    After the last few days of warm weather, the CH thermostat never triggered the boiler to turn on, and now the DHW temperature has dropped. I can't seem to get the boiler to turn on for DHW. The boiler only shows the CH radiator symbol on the right, and no DHW tap symbol on the left. From...
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