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Hi everyone, I have recently moved house and updated the thermostat to Hive. Ever since, I’ve noticed that the boiler (Vokera Syntesi 25 E) has been firing once every hour or so, without CH or HW, for around 30 seconds. Is this normal? I cannot remember noticing this before I installed Hive but...

Hi all! Currently switching the old Horstmann H17 receiver out for a Hive but can’t find any wiring diagrams similar to what I’m looking at. Can anyone here make heads or tails of this, and help me out on the switch over. Thanks in advance!