In order to add a heating module to your installation, associate it with your thermostat by following this procedure:
To be able to associate the thermostat with the heating module, it is necessary to put your heating module in 'pairing' mode.
To do this, tap quickly several times in the centre of your heating module until you see the three LEDs flash / blink.
Then wake up the thermostat by placing your hand in the centre, after having placed it on the heating module in order to make the association: the house appears, then a two-way arrow, then the temperature.
The LEDs on the module should then stop flashing / blinking.
(This manipulation works whether your product is COMAP or Qivivo).
Here is an explanatory video to guide you: https://youtu.be/TnHsAaPZMjg