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  1. J

    horstman central heating timer

    Hi David, Thanks for that,I dont smoke but Ill have a large JD and coke read the wiring diagrams again and then ,well I dont know. Jaguar
  2. J

    horstman central heating timer

    Hi ollski Thanks for that but I replaced original wiring on boiler with new cable and copied original wiring colours,do you mean wiring on new heater control. Thanks
  3. J

    horstman central heating timer

    hi all, i've just replaced my Randall 103E7 timer with a Horstman H17 digital timer but now ,when timed to come ON its OFF,and when timed to go OFF its ON, :oops: What have I done wrong ? anyone please.
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