• We have a combi boiler, and a backup immersion heater

    That doesn't sound like a combi boiler then. You may have a Y Plan heating system.


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    • Y-Plan-Water.gif
  • That doesn't sound like a combi boiler then. You may have a Y Plan heating system.

    It is a combi.

    Most of the time (always, apart from when something is fucked) the immersion is turned off. As in all electrically turned off by hand.

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