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Thread: Evohome 2nd hce80 not triggering boiler relay

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  1. #11
    Automated Home Legend
    Join Date
    Jul 2014
    Posts
    1,657

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    There is a subtle unpublished difference between the two UFH controllers. One uses it's internal antenna and one requires an external antenna, and that was all that people thought were the differences. However from sniffing the RF data we now know that one controller does not publish the individual zone demands, but only a single consolidated Heat Demand for the entire UFH controller. It's a pity really. This was uncovered in another thread.
    I'll edit this post if/when I find it.
    Found it : https://www.automatedhome.co.uk/vbul...-radio-signals
    Last edited by bruce_miranda; 14th September 2021 at 10:44 AM.

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