Smart Thermostat not calling for heat

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Hi, I have just installed two smart stats as an add on for a system installed last week. The original installation is all working and if one of the rad stats calls for heat it fires up the boiler but the two new ones don’t?…… Am I missing something or is there another reason?……🤷🏻‍♂️😉🌻

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  • hugbilly
    hugbilly ✭✭✭
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    You need to assign them to a zone controller, this is often the wireless receiver

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