Recent content by jbmc

  1. J

    Mid-Position Valve

    It's the Honeywell V4073A.
  2. J

    Mid-Position Valve

    Is it normal for the orange wire of the mid position valve to temporarily cease being live when the valve is switching from the mid-position (heating + h/w) to the heating only position? This causes the boiler to momentarily turn off.
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