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  1. J

    Vailliant Control VR65 comm error

    I am hoping someone can help. I have an ecoTEC 630 that was installed with a very basic timing system. Having looked through the literature I decided that it would run better with a VR65 linked in with a room thermostat. I went with the VRT 392F that controls the hot water too. All was...
  2. J

    Help please Valliant eBUS controls

    I am hoping a Valliant expert can help. I have an ecoTEC 630 that was installed with a very basic timing system. Having looked through the literature I decided that it would run better with a VR65 linked in with a room thermostat. I went with the VRT 392F that controls the hot water too. All...
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