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Thanks for this. Correct, previously used Vaillant controls. D.005 Heating target flow temp is 50degC D.009 eBus controller target value is 50degC D.071 Max. heating target flow temp 75degC D.090 = 1. @Stuckinarut Are the 50degC settings above causing me the trouble? Is the eBus causing the...

Thanks for your help. It appears the 24V jumper link has already been removed so I am assuming it is not that. Any thoughts?

Hi, I recently had an engineer fit a Hive smart thermostat to my Vaillant boiler. Previously the boiler was working with the standard Vaillant thermostat, and the radiators were providing the desired levels of heat. Since the Hive has been installed, the boiler does not reach the target...