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When a room is displayed in the App

with an orange background, it is attempting to warm the radiator

and the target temperature is sent to the valve.

Each Radiator Valve

within that room should have received the 'setpoint' (i.e. target temperature) within 10 minutes of it being changed on the app. You can tell if it has by pressing any one of the three buttons - the screen will light up and display the current setpoint. 

If the

valve receives it's setpoint, but the radiator does not begin to get warm for a long time, you can change the following setting

to make the valve think that it is mounted onto a radiator that is too small for the room, so therefore it needs to open faster to heat the room. Once the room is up to temperature then it controls to the temperature, but there is a chance that the room may overshoot the target temperature if the radiator is in fact too large for the room.

1. Hold down the middle button until the screen illuminates and 'M' is displayed
2. Press the left (down arrow) button, twice, so that 'Pb' is displayed
3. Press the middle button. A value will be displayed, one of: P1 / P2 / P3
4. Press the right (up arrow) button until P3 is displayed.
5. Press the middle button to select P3.