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Yes removed RT link wired new thermostat to that then the new receiver has a button you press a light comes on the boiler comes on press it again it goes off, but it just kept flashing I dont no if you just pull the receiver off the boiler does that cancel all the settings are do you have to do...

Yes I have removed the receiver but the boiler seemed to override the new thermostat when testing it

Hi I have a vaillant ecotec. 28 year 2020 with a vrt 350f thermostat with built in receiver I want to put netatmo smart thermostat in but how do I over ride the built in receiver thanks