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    Grant Combi 90 Outdoor Boiler tripping LCD circuit and now the 3A spur fuse- help please?

    Thank you for the prompt reply. Not very competent/knowledgeable at all but can have a go tomorrow pre plumber arriving on Monday. How do we disconnect the pump? Do you mean electrically by undoing the black microswitch assembly. And then, if we can sort out disconnecting the pump, do you mean...
  2. W

    Grant Combi 90 Outdoor Boiler tripping LCD circuit and now the 3A spur fuse- help please?

    Whenever any demands are made on the boiler through running the hot water or switching the heating on, the lcd trips immediately. We bled the pump yesterday and the system worked ok for a day and then all went off again. The burner will fire up after it has rested(cooled down?) but now after a...
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