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  1. M

    Change of control unit – now CH not working no power to pump

    Hi, its a fully pumped system. Im affraid I dont not the difference between Y and S plan. Thanks
  2. M

    Change of control unit – now CH not working no power to pump

    Yep 230v at the thermostat, and yes its a fully pumped system. As far as Im aware there are no other controls which are present but there is an emersion tank upstairs, but I dont think that comes into paly with the CH not working. Thanks
  3. M

    Change of control unit – now CH not working no power to pump

    I’m running an old Gloworm back boiler which has operated without fault for the last 3 years (since I moved in to this house), the control unit used was a Landis and Gyr RWB2 which has a sliding on off switch for both CH and HW accompanied by a large rotating timer (which never worked, I just...
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