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Recent content by David Looker

  1. D

    fix a Boss mid position diverter BMPV22

    This unit is malfunctioning. It will no longer switch to central heating. Does anyone know either how to fix this or how to find Boss so I can ask them or get instructions for unit?
  2. D

    Potterton Suprima 50 not working

    I too had my pump changed and the system works well except for the intermittent cutouts. Having read what you wrote I'm keen to do these checks but let me know what is a pcb and details about what I have to do. The pump and fitting cost £220 for about three quarters of an hour's work but at...
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