1. If you are not already in the default screen, press the left arrow key (key 3) until the screen looks similar to the image below.

2. Press the enter key (key 8). The screen will now appear as the image below.

3. Press the right arrow key (key 5). The screen will now appear as the image below.

4. Press the down arrow key (key 6). The screen will now appear as the image below.

5. Press the right arrow key (key 5). The screen will now appear as the image below.

6. Enter the desired temperature between 0 and 40 degrees, from the numerical keypad (keys 2). Let's say you have set the temperature to 20 degrees Celcius, by pressing 2 and 0. The screen will now appear as the image below.

7. Press the left enter key (key 8). This will return you to the heating menu screen as displayed in step 4.

8. Press the left arrow key (key 3) until the default screen is displayed.