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  1. J

    Horstmann Economy 7 quartz not heating on timer

    That’s all working now. Thanks for your help!
  2. J

    Horstmann Economy 7 quartz not heating on timer

    Thanks for replies. John D - I'm afraid I don't have a multimeter. Oldbuffer - I've attached some photos - there don't appear to be any obvious reset buttons...
  3. J

    Horstmann Economy 7 quartz not heating on timer

    I have a Horstmann Economy 7 quartz controller fitted to a Kingspan Range Tribune HW tank. Both are relatively new (4 years old). For no apparent reason the hot water has stopped heating up overnight. The boost setting still works, and the 'timed' light comes on on the controller when it should...
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