Yes, but not all of them.
For heating
Havenwise controls the flow temperature of the heat pump, so it will overwrite the weather compensation curve or heat curve. It will also set the target room temperature on the heat pump to avoid interference with the Havenwise logic (see article here).
For hot water
Havenwise will determine when a hot water cycle runs and to what target temperature, based on your hot water schedules in the Havenwise app.
Havenwise does not overwrite all the settings
There are certain settings that we cannot change via the internet. Examples include settings for the legionella cycle, outdoor temperature thresholds, etc.
For Mitsubishi and Samsung heat pumps, we do ask you to remove any existing schedules from the Mitsubishi / Samsung controller and Mitsubishi / Samsung app.