new baxi sssure 524 coming on when room thermostat not calling for heat

Joined
27 Oct 2023
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United Kingdom
baxi assure 524 boiler coming on without room thermostat calling fir it to .
room thermostat set 16 room temperature 20 boiler coming on no flame symbol on room thermostat honeywell dt92e ,boiler programmer st9120c flame symbol on mode is continuous , is the room thermostat not communicating with the boiler?
but why is boiler just coming on of its own accord?
please help
 
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no not that..turns out the room thermostat needed to be rebinded to the boiler programmer paired basically .found the instructions .niw back to how was..
 
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