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- 14 Jan 2024
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Hey,
Had our old boiler replaced which had a fully working nest setup for years, currently with new boiler when the nest ends the heating or hot water demand the boiler carries on heating and I've left this for 20 minutes with no change, I've had to switch it off to make it stop and then after reboot as soon as there is demand it comes on and then does not turn off. I've checked that the 24v link has been removed.
For now I've installed the old programmer and everything turns off and on as intended and it's left me really confused, its exactly the same setup with the new boiler vs the old, any ideas spring to mind?
The boiler is a Vaillant Sustain 418, cannot find much in the way of this model being mentioned online, many ecotanks etc.
May have to call out an electrician at some point as I've wasted hours on this today but hoping it might be something simple I've overlooked.
Had our old boiler replaced which had a fully working nest setup for years, currently with new boiler when the nest ends the heating or hot water demand the boiler carries on heating and I've left this for 20 minutes with no change, I've had to switch it off to make it stop and then after reboot as soon as there is demand it comes on and then does not turn off. I've checked that the 24v link has been removed.
For now I've installed the old programmer and everything turns off and on as intended and it's left me really confused, its exactly the same setup with the new boiler vs the old, any ideas spring to mind?
The boiler is a Vaillant Sustain 418, cannot find much in the way of this model being mentioned online, many ecotanks etc.
May have to call out an electrician at some point as I've wasted hours on this today but hoping it might be something simple I've overlooked.