Recent content by Bazsimpson

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    Honeywell St699 problems I can't find any examples of this.

    Thanks for the suggestions Hasn't been changed since we moved in two years ago. It did this once a while back. The thing that. Can't get my head round is that it's not tripping anything the circuit is still complete to get it back working it's a fused switch next to the boiler I click off and...
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    Honeywell St699 problems I can't find any examples of this.

    forgive the basic errors I'm not an expert on any of this. We have a hot water tank and gas central heating it is controlled by a dial thermostat and a Honeywell st699. The one day two cycle one... If the system calls for hot water OR central heating then there is no issue and it works fine...
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